| 1: | a__from(X) | → cons(mark(X),from(s(X))) | |
| 2: | a__length(nil) | → 0 | |
| 3: | a__length(cons(X,Y)) | → s(a__length1(Y)) | |
| 4: | a__length1(X) | → a__length(X) | |
| 5: | mark(from(X)) | → a__from(mark(X)) | |
| 6: | mark(length(X)) | → a__length(X) | |
| 7: | mark(length1(X)) | → a__length1(X) | |
| 8: | mark(cons(X1,X2)) | → cons(mark(X1),X2) | |
| 9: | mark(s(X)) | → s(mark(X)) | |
| 10: | mark(nil) | → nil | |
| 11: | mark(0) | → 0 | |
| 12: | a__from(X) | → from(X) | |
| 13: | a__length(X) | → length(X) | |
| 14: | a__length1(X) | → length1(X) | |
| 15: | A__FROM(X) | → MARK(X) | |
| 16: | A__LENGTH(cons(X,Y)) | → A__LENGTH1(Y) | |
| 17: | A__LENGTH1(X) | → A__LENGTH(X) | |
| 18: | MARK(from(X)) | → A__FROM(mark(X)) | |
| 19: | MARK(from(X)) | → MARK(X) | |
| 20: | MARK(length(X)) | → A__LENGTH(X) | |
| 21: | MARK(length1(X)) | → A__LENGTH1(X) | |
| 22: | MARK(cons(X1,X2)) | → MARK(X1) | |
| 23: | MARK(s(X)) | → MARK(X) | |