MAYBE
by ttt2 (version ttt2 1.15)
The rewrite relation of the following TRS is considered.
| Begin(0(x0)) | → | Wait(Right1(x0)) | 
| Begin(s(x0)) | → | Wait(Right2(x0)) | 
| Begin(0(x0)) | → | Wait(Right3(x0)) | 
| Begin(s(x0)) | → | Wait(Right4(x0)) | 
| Begin(p(s(x0))) | → | Wait(Right5(x0)) | 
| Begin(s(x0)) | → | Wait(Right6(x0)) | 
| Begin(s(x0)) | → | Wait(Right7(x0)) | 
| Begin(0(x0)) | → | Wait(Right8(x0)) | 
| Right1(sq(End(x0))) | → | Left(p(s(p(s(p(p(p(p(s(s(s(s(0(p(s(p(s(End(x0))))))))))))))))))) | 
| Right2(sq(End(x0))) | → | Left(s(p(s(p(s(p(p(s(s(twice(p(s(p(s(p(p(p(s(s(s(sq(p(p(p(p(p(p(s(s(s(s(s(s(End(x0))))))))))))))))))))))))))))))))))) | 
| Right3(twice(End(x0))) | → | Left(p(p(p(p(s(s(p(s(s(s(0(p(p(p(s(s(s(p(p(s(s(p(s(p(s(p(s(End(x0))))))))))))))))))))))))))))) | 
| Right4(twice(End(x0))) | → | Left(p(p(s(s(s(p(p(s(s(s(twice(p(s(p(s(End(x0))))))))))))))))) | 
| Right5(p(End(x0))) | → | Left(p(End(x0))) | 
| Right6(p(p(End(x0)))) | → | Left(p(End(x0))) | 
| Right7(p(End(x0))) | → | Left(End(x0)) | 
| Right8(p(End(x0))) | → | Left(0(s(s(s(s(s(s(s(s(s(s(s(End(x0)))))))))))))) | 
| Right1(sq(x0)) | → | Asq(Right1(x0)) | 
| Right2(sq(x0)) | → | Asq(Right2(x0)) | 
| Right3(sq(x0)) | → | Asq(Right3(x0)) | 
| Right4(sq(x0)) | → | Asq(Right4(x0)) | 
| Right5(sq(x0)) | → | Asq(Right5(x0)) | 
| Right6(sq(x0)) | → | Asq(Right6(x0)) | 
| Right7(sq(x0)) | → | Asq(Right7(x0)) | 
| Right8(sq(x0)) | → | Asq(Right8(x0)) | 
| Right1(0(x0)) | → | A0(Right1(x0)) | 
| Right2(0(x0)) | → | A0(Right2(x0)) | 
| Right3(0(x0)) | → | A0(Right3(x0)) | 
| Right4(0(x0)) | → | A0(Right4(x0)) | 
| Right5(0(x0)) | → | A0(Right5(x0)) | 
| Right6(0(x0)) | → | A0(Right6(x0)) | 
| Right7(0(x0)) | → | A0(Right7(x0)) | 
| Right8(0(x0)) | → | A0(Right8(x0)) | 
| Right1(p(x0)) | → | Ap(Right1(x0)) | 
| Right2(p(x0)) | → | Ap(Right2(x0)) | 
| Right3(p(x0)) | → | Ap(Right3(x0)) | 
| Right4(p(x0)) | → | Ap(Right4(x0)) | 
| Right5(p(x0)) | → | Ap(Right5(x0)) | 
| Right6(p(x0)) | → | Ap(Right6(x0)) | 
| Right7(p(x0)) | → | Ap(Right7(x0)) | 
| Right8(p(x0)) | → | Ap(Right8(x0)) | 
| Right1(s(x0)) | → | As(Right1(x0)) | 
| Right2(s(x0)) | → | As(Right2(x0)) | 
| Right3(s(x0)) | → | As(Right3(x0)) | 
| Right4(s(x0)) | → | As(Right4(x0)) | 
| Right5(s(x0)) | → | As(Right5(x0)) | 
| Right6(s(x0)) | → | As(Right6(x0)) | 
| Right7(s(x0)) | → | As(Right7(x0)) | 
| Right8(s(x0)) | → | As(Right8(x0)) | 
| Right1(twice(x0)) | → | Atwice(Right1(x0)) | 
| Right2(twice(x0)) | → | Atwice(Right2(x0)) | 
| Right3(twice(x0)) | → | Atwice(Right3(x0)) | 
| Right4(twice(x0)) | → | Atwice(Right4(x0)) | 
| Right5(twice(x0)) | → | Atwice(Right5(x0)) | 
| Right6(twice(x0)) | → | Atwice(Right6(x0)) | 
| Right7(twice(x0)) | → | Atwice(Right7(x0)) | 
| Right8(twice(x0)) | → | Atwice(Right8(x0)) | 
| Asq(Left(x0)) | → | Left(sq(x0)) | 
| A0(Left(x0)) | → | Left(0(x0)) | 
| Ap(Left(x0)) | → | Left(p(x0)) | 
| As(Left(x0)) | → | Left(s(x0)) | 
| Atwice(Left(x0)) | → | Left(twice(x0)) | 
| Wait(Left(x0)) | → | Begin(x0) | 
| sq(0(x0)) | → | p(s(p(s(p(p(p(p(s(s(s(s(0(p(s(p(s(x0))))))))))))))))) | 
| sq(s(x0)) | → | s(p(s(p(s(p(p(s(s(twice(p(s(p(s(p(p(p(s(s(s(sq(p(p(p(p(p(p(s(s(s(s(s(s(x0))))))))))))))))))))))))))))))))) | 
| twice(0(x0)) | → | p(p(p(p(s(s(p(s(s(s(0(p(p(p(s(s(s(p(p(s(s(p(s(p(s(p(s(x0))))))))))))))))))))))))))) | 
| twice(s(x0)) | → | p(p(s(s(s(p(p(s(s(s(twice(p(s(p(s(x0))))))))))))))) | 
| p(p(s(x0))) | → | p(x0) | 
| p(s(x0)) | → | x0 | 
| p(0(x0)) | → | 0(s(s(s(s(s(s(s(s(s(s(s(x0)))))))))))) | 
| 0(x0) | → | x0 | 
| Begin(0(x0)) | → | Wait(Right1(x0)) | 
| Begin(s(x0)) | → | Wait(Right2(x0)) | 
| Begin(0(x0)) | → | Wait(Right3(x0)) | 
| Begin(s(x0)) | → | Wait(Right4(x0)) | 
| Begin(p(s(x0))) | → | Wait(Right5(x0)) | 
| Begin(s(x0)) | → | Wait(Right6(x0)) | 
| Begin(s(x0)) | → | Wait(Right7(x0)) | 
| Begin(0(x0)) | → | Wait(Right8(x0)) | 
| Right1(sq(End(x0))) | → | Left(p(s(p(s(p(p(p(p(s(s(s(s(0(p(s(p(s(End(x0))))))))))))))))))) | 
| Right2(sq(End(x0))) | → | Left(s(p(s(p(s(p(p(s(s(twice(p(s(p(s(p(p(p(s(s(s(sq(p(p(p(p(p(p(s(s(s(s(s(s(End(x0))))))))))))))))))))))))))))))))))) | 
| Right3(twice(End(x0))) | → | Left(p(p(p(p(s(s(p(s(s(s(0(p(p(p(s(s(s(p(p(s(s(p(s(p(s(p(s(End(x0))))))))))))))))))))))))))))) | 
| Right4(twice(End(x0))) | → | Left(p(p(s(s(s(p(p(s(s(s(twice(p(s(p(s(End(x0))))))))))))))))) | 
| Right5(p(End(x0))) | → | Left(p(End(x0))) | 
| Right6(p(p(End(x0)))) | → | Left(p(End(x0))) | 
| Right7(p(End(x0))) | → | Left(End(x0)) | 
| Right8(p(End(x0))) | → | Left(0(s(s(s(s(s(s(s(s(s(s(s(End(x0)))))))))))))) | 
| Right1(sq(x0)) | → | Asq(Right1(x0)) | 
| Right2(sq(x0)) | → | Asq(Right2(x0)) | 
| Right3(sq(x0)) | → | Asq(Right3(x0)) | 
| Right4(sq(x0)) | → | Asq(Right4(x0)) | 
| Right5(sq(x0)) | → | Asq(Right5(x0)) | 
| Right6(sq(x0)) | → | Asq(Right6(x0)) | 
| Right7(sq(x0)) | → | Asq(Right7(x0)) | 
| Right8(sq(x0)) | → | Asq(Right8(x0)) | 
| Right1(0(x0)) | → | A0(Right1(x0)) | 
| Right2(0(x0)) | → | A0(Right2(x0)) | 
| Right3(0(x0)) | → | A0(Right3(x0)) | 
| Right4(0(x0)) | → | A0(Right4(x0)) | 
| Right5(0(x0)) | → | A0(Right5(x0)) | 
| Right6(0(x0)) | → | A0(Right6(x0)) | 
| Right7(0(x0)) | → | A0(Right7(x0)) | 
| Right8(0(x0)) | → | A0(Right8(x0)) | 
| Right1(p(x0)) | → | Ap(Right1(x0)) | 
| Right2(p(x0)) | → | Ap(Right2(x0)) | 
| Right3(p(x0)) | → | Ap(Right3(x0)) | 
| Right4(p(x0)) | → | Ap(Right4(x0)) | 
| Right5(p(x0)) | → | Ap(Right5(x0)) | 
| Right6(p(x0)) | → | Ap(Right6(x0)) | 
| Right7(p(x0)) | → | Ap(Right7(x0)) | 
| Right8(p(x0)) | → | Ap(Right8(x0)) | 
| Right1(s(x0)) | → | As(Right1(x0)) | 
| Right2(s(x0)) | → | As(Right2(x0)) | 
| Right3(s(x0)) | → | As(Right3(x0)) | 
| Right4(s(x0)) | → | As(Right4(x0)) | 
| Right5(s(x0)) | → | As(Right5(x0)) | 
| Right6(s(x0)) | → | As(Right6(x0)) | 
| Right7(s(x0)) | → | As(Right7(x0)) | 
| Right8(s(x0)) | → | As(Right8(x0)) | 
| Right1(twice(x0)) | → | Atwice(Right1(x0)) | 
| Right2(twice(x0)) | → | Atwice(Right2(x0)) | 
| Right3(twice(x0)) | → | Atwice(Right3(x0)) | 
| Right4(twice(x0)) | → | Atwice(Right4(x0)) | 
| Right5(twice(x0)) | → | Atwice(Right5(x0)) | 
| Right6(twice(x0)) | → | Atwice(Right6(x0)) | 
| Right7(twice(x0)) | → | Atwice(Right7(x0)) | 
| Right8(twice(x0)) | → | Atwice(Right8(x0)) | 
| Asq(Left(x0)) | → | Left(sq(x0)) | 
| A0(Left(x0)) | → | Left(0(x0)) | 
| Ap(Left(x0)) | → | Left(p(x0)) | 
| As(Left(x0)) | → | Left(s(x0)) | 
| Atwice(Left(x0)) | → | Left(twice(x0)) | 
| Wait(Left(x0)) | → | Begin(x0) | 
| sq(0(x0)) | → | p(s(p(s(p(p(p(p(s(s(s(s(0(p(s(p(s(x0))))))))))))))))) | 
| sq(s(x0)) | → | s(p(s(p(s(p(p(s(s(twice(p(s(p(s(p(p(p(s(s(s(sq(p(p(p(p(p(p(s(s(s(s(s(s(x0))))))))))))))))))))))))))))))))) | 
| twice(0(x0)) | → | p(p(p(p(s(s(p(s(s(s(0(p(p(p(s(s(s(p(p(s(s(p(s(p(s(p(s(x0))))))))))))))))))))))))))) | 
| twice(s(x0)) | → | p(p(s(s(s(p(p(s(s(s(twice(p(s(p(s(x0))))))))))))))) | 
| p(p(s(x0))) | → | p(x0) | 
| p(s(x0)) | → | x0 | 
| p(0(x0)) | → | 0(s(s(s(s(s(s(s(s(s(s(s(x0)))))))))))) | 
| 0(x0) | → | x0 |