(VAR y x) (RULES +(0,y) -> y +(s(x),y) -> s(+(x,y)) *(0,y) -> 0 *(s(x),y) -> +(*(x,y),y) *(x,s(y)) -> +(x,*(x,y)) ) (COMMENT experiments for [36] submitted by: Takahito Aoto )