from X cons X n__from s X sel 0 cons X Y X sel s X cons Y Z sel X activate Z from X n__from X activate n__from X from X activate X X from 1 cons 2 n__from 1 s 1 sel 2 0 0 activate 1 FULL ./TRS/TRCSR/Ex3_12_Luc96a_Z.trs