fmod LAST is 
	sorts MyItem MyList InVec .
	 
	*** DT definitions (constructors)
	op [] : -> MyList [ctor] .
	op cons : MyItem MyList -> MyList [ctor] .
	 
	*** defined function names (to be induced, preds, bk)
	op last : MyList -> MyItem [metadata "induce"] .
	*** input encapsulation
	op in : MyList -> InVec [ctor] .
	 
	vars U V W X Y Z : MyItem .

	eq last(cons(Y,[])) = Y .
	eq last(cons(Y,cons(X,[]))) = X .
	eq last(cons(Y,cons(X,cons(Z,[])))) = Z .
endfm