active __ __ X Y Z mark __ X __ Y Z active __ X nil mark X active __ nil X mark X active and tt X mark X active isNePal __ I __ P I mark tt mark __ X1 X2 active __ mark X1 mark X2 mark nil active nil mark and X1 X2 active and mark X1 X2 mark tt active tt mark isNePal X active isNePal mark X __ mark X1 X2 __ X1 X2 __ X1 mark X2 __ X1 X2 __ active X1 X2 __ X1 X2 __ X1 active X2 __ X1 X2 and mark X1 X2 and X1 X2 and X1 mark X2 and X1 X2 and active X1 X2 and X1 X2 and X1 active X2 and X1 X2 isNePal mark X isNePal X isNePal active X isNePal X active 1 __ 2 mark 1 nil 0 and 2 tt 0 isNePal 1 FULL ./TRS/TRCSR/PALINDROME_nosorts_iGM.trs