MAYBE
by ttt2 (version ttt2 1.15)
The rewrite relation of the following TRS is considered.
| begin(end(x0)) | → | rewrite(end(x0)) | 
| begin(g(x0)) | → | rotate(cut(Cg(guess(x0)))) | 
| begin(h(x0)) | → | rotate(cut(Ch(guess(x0)))) | 
| begin(f(x0)) | → | rotate(cut(Cf(guess(x0)))) | 
| begin(s(x0)) | → | rotate(cut(Cs(guess(x0)))) | 
| begin(b(x0)) | → | rotate(cut(Cb(guess(x0)))) | 
| begin(a(x0)) | → | rotate(cut(Ca(guess(x0)))) | 
| guess(g(x0)) | → | Cg(guess(x0)) | 
| guess(h(x0)) | → | Ch(guess(x0)) | 
| guess(f(x0)) | → | Cf(guess(x0)) | 
| guess(s(x0)) | → | Cs(guess(x0)) | 
| guess(b(x0)) | → | Cb(guess(x0)) | 
| guess(a(x0)) | → | Ca(guess(x0)) | 
| guess(g(x0)) | → | moveleft(Bg(wait(x0))) | 
| guess(h(x0)) | → | moveleft(Bh(wait(x0))) | 
| guess(f(x0)) | → | moveleft(Bf(wait(x0))) | 
| guess(s(x0)) | → | moveleft(Bs(wait(x0))) | 
| guess(b(x0)) | → | moveleft(Bb(wait(x0))) | 
| guess(a(x0)) | → | moveleft(Ba(wait(x0))) | 
| guess(end(x0)) | → | finish(end(x0)) | 
| Cg(moveleft(Bg(x0))) | → | moveleft(Bg(Ag(x0))) | 
| Ch(moveleft(Bg(x0))) | → | moveleft(Bg(Ah(x0))) | 
| Cf(moveleft(Bg(x0))) | → | moveleft(Bg(Af(x0))) | 
| Cs(moveleft(Bg(x0))) | → | moveleft(Bg(As(x0))) | 
| Cb(moveleft(Bg(x0))) | → | moveleft(Bg(Ab(x0))) | 
| Ca(moveleft(Bg(x0))) | → | moveleft(Bg(Aa(x0))) | 
| Cg(moveleft(Bh(x0))) | → | moveleft(Bh(Ag(x0))) | 
| Ch(moveleft(Bh(x0))) | → | moveleft(Bh(Ah(x0))) | 
| Cf(moveleft(Bh(x0))) | → | moveleft(Bh(Af(x0))) | 
| Cs(moveleft(Bh(x0))) | → | moveleft(Bh(As(x0))) | 
| Cb(moveleft(Bh(x0))) | → | moveleft(Bh(Ab(x0))) | 
| Ca(moveleft(Bh(x0))) | → | moveleft(Bh(Aa(x0))) | 
| Cg(moveleft(Bf(x0))) | → | moveleft(Bf(Ag(x0))) | 
| Ch(moveleft(Bf(x0))) | → | moveleft(Bf(Ah(x0))) | 
| Cf(moveleft(Bf(x0))) | → | moveleft(Bf(Af(x0))) | 
| Cs(moveleft(Bf(x0))) | → | moveleft(Bf(As(x0))) | 
| Cb(moveleft(Bf(x0))) | → | moveleft(Bf(Ab(x0))) | 
| Ca(moveleft(Bf(x0))) | → | moveleft(Bf(Aa(x0))) | 
| Cg(moveleft(Bs(x0))) | → | moveleft(Bs(Ag(x0))) | 
| Ch(moveleft(Bs(x0))) | → | moveleft(Bs(Ah(x0))) | 
| Cf(moveleft(Bs(x0))) | → | moveleft(Bs(Af(x0))) | 
| Cs(moveleft(Bs(x0))) | → | moveleft(Bs(As(x0))) | 
| Cb(moveleft(Bs(x0))) | → | moveleft(Bs(Ab(x0))) | 
| Ca(moveleft(Bs(x0))) | → | moveleft(Bs(Aa(x0))) | 
| Cg(moveleft(Bb(x0))) | → | moveleft(Bb(Ag(x0))) | 
| Ch(moveleft(Bb(x0))) | → | moveleft(Bb(Ah(x0))) | 
| Cf(moveleft(Bb(x0))) | → | moveleft(Bb(Af(x0))) | 
| Cs(moveleft(Bb(x0))) | → | moveleft(Bb(As(x0))) | 
| Cb(moveleft(Bb(x0))) | → | moveleft(Bb(Ab(x0))) | 
| Ca(moveleft(Bb(x0))) | → | moveleft(Bb(Aa(x0))) | 
| Cg(moveleft(Ba(x0))) | → | moveleft(Ba(Ag(x0))) | 
| Ch(moveleft(Ba(x0))) | → | moveleft(Ba(Ah(x0))) | 
| Cf(moveleft(Ba(x0))) | → | moveleft(Ba(Af(x0))) | 
| Cs(moveleft(Ba(x0))) | → | moveleft(Ba(As(x0))) | 
| Cb(moveleft(Ba(x0))) | → | moveleft(Ba(Ab(x0))) | 
| Ca(moveleft(Ba(x0))) | → | moveleft(Ba(Aa(x0))) | 
| cut(moveleft(Bg(x0))) | → | Dg(cut(goright(x0))) | 
| cut(moveleft(Bh(x0))) | → | Dh(cut(goright(x0))) | 
| cut(moveleft(Bf(x0))) | → | Df(cut(goright(x0))) | 
| cut(moveleft(Bs(x0))) | → | Ds(cut(goright(x0))) | 
| cut(moveleft(Bb(x0))) | → | Db(cut(goright(x0))) | 
| cut(moveleft(Ba(x0))) | → | Da(cut(goright(x0))) | 
| goright(Ag(x0)) | → | Cg(goright(x0)) | 
| goright(Ah(x0)) | → | Ch(goright(x0)) | 
| goright(Af(x0)) | → | Cf(goright(x0)) | 
| goright(As(x0)) | → | Cs(goright(x0)) | 
| goright(Ab(x0)) | → | Cb(goright(x0)) | 
| goright(Aa(x0)) | → | Ca(goright(x0)) | 
| goright(wait(g(x0))) | → | moveleft(Bg(wait(x0))) | 
| goright(wait(h(x0))) | → | moveleft(Bh(wait(x0))) | 
| goright(wait(f(x0))) | → | moveleft(Bf(wait(x0))) | 
| goright(wait(s(x0))) | → | moveleft(Bs(wait(x0))) | 
| goright(wait(b(x0))) | → | moveleft(Bb(wait(x0))) | 
| goright(wait(a(x0))) | → | moveleft(Ba(wait(x0))) | 
| goright(wait(end(x0))) | → | finish(end(x0)) | 
| Cg(finish(x0)) | → | finish(g(x0)) | 
| Ch(finish(x0)) | → | finish(h(x0)) | 
| Cf(finish(x0)) | → | finish(f(x0)) | 
| Cs(finish(x0)) | → | finish(s(x0)) | 
| Cb(finish(x0)) | → | finish(b(x0)) | 
| Ca(finish(x0)) | → | finish(a(x0)) | 
| cut(finish(x0)) | → | finish2(x0) | 
| Dg(finish2(x0)) | → | finish2(g(x0)) | 
| Dh(finish2(x0)) | → | finish2(h(x0)) | 
| Df(finish2(x0)) | → | finish2(f(x0)) | 
| Ds(finish2(x0)) | → | finish2(s(x0)) | 
| Db(finish2(x0)) | → | finish2(b(x0)) | 
| Da(finish2(x0)) | → | finish2(a(x0)) | 
| rotate(finish2(x0)) | → | rewrite(x0) | 
| rewrite(g(h(x0))) | → | begin(g(f(s(x0)))) | 
| rewrite(f(s(s(s(x0))))) | → | begin(h(f(s(h(x0))))) | 
| rewrite(f(h(x0))) | → | begin(h(f(s(h(x0))))) | 
| rewrite(h(x0)) | → | begin(x0) | 
| rewrite(f(f(s(s(x0))))) | → | begin(s(s(s(f(f(x0)))))) | 
| rewrite(b(a(x0))) | → | begin(a(b(x0))) | 
| rewrite(a(a(a(x0)))) | → | begin(b(a(a(b(x0))))) | 
| rewrite(b(b(b(b(x0))))) | → | begin(a(x0)) | 
| begin(end(x0)) | → | rewrite(end(x0)) | 
| begin(g(x0)) | → | rotate(cut(Cg(guess(x0)))) | 
| begin(h(x0)) | → | rotate(cut(Ch(guess(x0)))) | 
| begin(f(x0)) | → | rotate(cut(Cf(guess(x0)))) | 
| begin(s(x0)) | → | rotate(cut(Cs(guess(x0)))) | 
| begin(b(x0)) | → | rotate(cut(Cb(guess(x0)))) | 
| begin(a(x0)) | → | rotate(cut(Ca(guess(x0)))) | 
| guess(g(x0)) | → | Cg(guess(x0)) | 
| guess(h(x0)) | → | Ch(guess(x0)) | 
| guess(f(x0)) | → | Cf(guess(x0)) | 
| guess(s(x0)) | → | Cs(guess(x0)) | 
| guess(b(x0)) | → | Cb(guess(x0)) | 
| guess(a(x0)) | → | Ca(guess(x0)) | 
| guess(g(x0)) | → | moveleft(Bg(wait(x0))) | 
| guess(h(x0)) | → | moveleft(Bh(wait(x0))) | 
| guess(f(x0)) | → | moveleft(Bf(wait(x0))) | 
| guess(s(x0)) | → | moveleft(Bs(wait(x0))) | 
| guess(b(x0)) | → | moveleft(Bb(wait(x0))) | 
| guess(a(x0)) | → | moveleft(Ba(wait(x0))) | 
| guess(end(x0)) | → | finish(end(x0)) | 
| Cg(moveleft(Bg(x0))) | → | moveleft(Bg(Ag(x0))) | 
| Ch(moveleft(Bg(x0))) | → | moveleft(Bg(Ah(x0))) | 
| Cf(moveleft(Bg(x0))) | → | moveleft(Bg(Af(x0))) | 
| Cs(moveleft(Bg(x0))) | → | moveleft(Bg(As(x0))) | 
| Cb(moveleft(Bg(x0))) | → | moveleft(Bg(Ab(x0))) | 
| Ca(moveleft(Bg(x0))) | → | moveleft(Bg(Aa(x0))) | 
| Cg(moveleft(Bh(x0))) | → | moveleft(Bh(Ag(x0))) | 
| Ch(moveleft(Bh(x0))) | → | moveleft(Bh(Ah(x0))) | 
| Cf(moveleft(Bh(x0))) | → | moveleft(Bh(Af(x0))) | 
| Cs(moveleft(Bh(x0))) | → | moveleft(Bh(As(x0))) | 
| Cb(moveleft(Bh(x0))) | → | moveleft(Bh(Ab(x0))) | 
| Ca(moveleft(Bh(x0))) | → | moveleft(Bh(Aa(x0))) | 
| Cg(moveleft(Bf(x0))) | → | moveleft(Bf(Ag(x0))) | 
| Ch(moveleft(Bf(x0))) | → | moveleft(Bf(Ah(x0))) | 
| Cf(moveleft(Bf(x0))) | → | moveleft(Bf(Af(x0))) | 
| Cs(moveleft(Bf(x0))) | → | moveleft(Bf(As(x0))) | 
| Cb(moveleft(Bf(x0))) | → | moveleft(Bf(Ab(x0))) | 
| Ca(moveleft(Bf(x0))) | → | moveleft(Bf(Aa(x0))) | 
| Cg(moveleft(Bs(x0))) | → | moveleft(Bs(Ag(x0))) | 
| Ch(moveleft(Bs(x0))) | → | moveleft(Bs(Ah(x0))) | 
| Cf(moveleft(Bs(x0))) | → | moveleft(Bs(Af(x0))) | 
| Cs(moveleft(Bs(x0))) | → | moveleft(Bs(As(x0))) | 
| Cb(moveleft(Bs(x0))) | → | moveleft(Bs(Ab(x0))) | 
| Ca(moveleft(Bs(x0))) | → | moveleft(Bs(Aa(x0))) | 
| Cg(moveleft(Bb(x0))) | → | moveleft(Bb(Ag(x0))) | 
| Ch(moveleft(Bb(x0))) | → | moveleft(Bb(Ah(x0))) | 
| Cf(moveleft(Bb(x0))) | → | moveleft(Bb(Af(x0))) | 
| Cs(moveleft(Bb(x0))) | → | moveleft(Bb(As(x0))) | 
| Cb(moveleft(Bb(x0))) | → | moveleft(Bb(Ab(x0))) | 
| Ca(moveleft(Bb(x0))) | → | moveleft(Bb(Aa(x0))) | 
| Cg(moveleft(Ba(x0))) | → | moveleft(Ba(Ag(x0))) | 
| Ch(moveleft(Ba(x0))) | → | moveleft(Ba(Ah(x0))) | 
| Cf(moveleft(Ba(x0))) | → | moveleft(Ba(Af(x0))) | 
| Cs(moveleft(Ba(x0))) | → | moveleft(Ba(As(x0))) | 
| Cb(moveleft(Ba(x0))) | → | moveleft(Ba(Ab(x0))) | 
| Ca(moveleft(Ba(x0))) | → | moveleft(Ba(Aa(x0))) | 
| cut(moveleft(Bg(x0))) | → | Dg(cut(goright(x0))) | 
| cut(moveleft(Bh(x0))) | → | Dh(cut(goright(x0))) | 
| cut(moveleft(Bf(x0))) | → | Df(cut(goright(x0))) | 
| cut(moveleft(Bs(x0))) | → | Ds(cut(goright(x0))) | 
| cut(moveleft(Bb(x0))) | → | Db(cut(goright(x0))) | 
| cut(moveleft(Ba(x0))) | → | Da(cut(goright(x0))) | 
| goright(Ag(x0)) | → | Cg(goright(x0)) | 
| goright(Ah(x0)) | → | Ch(goright(x0)) | 
| goright(Af(x0)) | → | Cf(goright(x0)) | 
| goright(As(x0)) | → | Cs(goright(x0)) | 
| goright(Ab(x0)) | → | Cb(goright(x0)) | 
| goright(Aa(x0)) | → | Ca(goright(x0)) | 
| goright(wait(g(x0))) | → | moveleft(Bg(wait(x0))) | 
| goright(wait(h(x0))) | → | moveleft(Bh(wait(x0))) | 
| goright(wait(f(x0))) | → | moveleft(Bf(wait(x0))) | 
| goright(wait(s(x0))) | → | moveleft(Bs(wait(x0))) | 
| goright(wait(b(x0))) | → | moveleft(Bb(wait(x0))) | 
| goright(wait(a(x0))) | → | moveleft(Ba(wait(x0))) | 
| goright(wait(end(x0))) | → | finish(end(x0)) | 
| Cg(finish(x0)) | → | finish(g(x0)) | 
| Ch(finish(x0)) | → | finish(h(x0)) | 
| Cf(finish(x0)) | → | finish(f(x0)) | 
| Cs(finish(x0)) | → | finish(s(x0)) | 
| Cb(finish(x0)) | → | finish(b(x0)) | 
| Ca(finish(x0)) | → | finish(a(x0)) | 
| cut(finish(x0)) | → | finish2(x0) | 
| Dg(finish2(x0)) | → | finish2(g(x0)) | 
| Dh(finish2(x0)) | → | finish2(h(x0)) | 
| Df(finish2(x0)) | → | finish2(f(x0)) | 
| Ds(finish2(x0)) | → | finish2(s(x0)) | 
| Db(finish2(x0)) | → | finish2(b(x0)) | 
| Da(finish2(x0)) | → | finish2(a(x0)) | 
| rotate(finish2(x0)) | → | rewrite(x0) | 
| rewrite(g(h(x0))) | → | begin(g(f(s(x0)))) | 
| rewrite(f(s(s(s(x0))))) | → | begin(h(f(s(h(x0))))) | 
| rewrite(f(h(x0))) | → | begin(h(f(s(h(x0))))) | 
| rewrite(h(x0)) | → | begin(x0) | 
| rewrite(f(f(s(s(x0))))) | → | begin(s(s(s(f(f(x0)))))) | 
| rewrite(b(a(x0))) | → | begin(a(b(x0))) | 
| rewrite(a(a(a(x0)))) | → | begin(b(a(a(b(x0))))) | 
| rewrite(b(b(b(b(x0))))) | → | begin(a(x0)) |