(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS start)) (VAR A B C) (RULES zip3(A,B,C) -> Com_1(zip3(A - 1,B - 1,C - 1)) :|: A >= 1 && B >= 1 && C >= 1 group3(A,B,C) -> Com_1(group3(A - 3,B,C)) :|: A >= 4 start(A,B,C) -> Com_1(zip3(A,B,C)) )