| 1: | a(f,a(f,a(g,a(g,x)))) | → a(g,a(g,a(g,a(f,a(f,a(f,x)))))) | |
| 2: | A(f,a(f,a(g,a(g,x)))) | → A(g,a(g,a(g,a(f,a(f,a(f,x)))))) | |
| 3: | A(f,a(f,a(g,a(g,x)))) | → A(g,a(g,a(f,a(f,a(f,x))))) | |
| 4: | A(f,a(f,a(g,a(g,x)))) | → A(g,a(f,a(f,a(f,x)))) | |
| 5: | A(f,a(f,a(g,a(g,x)))) | → A(f,a(f,a(f,x))) | |
| 6: | A(f,a(f,a(g,a(g,x)))) | → A(f,a(f,x)) | |
| 7: | A(f,a(f,a(g,a(g,x)))) | → A(f,x) | |