app nil YS YS app cons X XS YS cons X n__app activate XS YS from X cons X n__from s X zWadr nil YS nil zWadr XS nil nil zWadr cons X XS cons Y YS cons app Y cons X n__nil n__zWadr activate XS activate YS prefix L cons nil n__zWadr L prefix L app X1 X2 n__app X1 X2 from X n__from X nil n__nil zWadr X1 X2 n__zWadr X1 X2 activate n__app X1 X2 app X1 X2 activate n__from X from X activate n__nil nil activate n__zWadr X1 X2 zWadr X1 X2 activate X X app 2 nil 0 cons 2 n__app 2 activate 1 from 1 n__from 1 s 1 zWadr 2 n__nil 0 n__zWadr 2 prefix 1 FULL ./TRS/TRCSR/Ex3_3_25_Bor03_Z.trs