POS	STACK
POS	INPUT
POS	INPUT	1
POS	INPUT	2
POS	INPUT	3
POS	STACK	1
POS	STACK	1	0	1
POS	STACK	0	-1
POS	INPUT	0	-1
DEP	STACK
DEP	STACK	0	0	0	-1
DEP	STACK	0	0	0	1
DEP	INPUT	0	0	0	-1
LEX	STACK
LEX	INPUT
LEX	INPUT	1
LEX	INPUT	2
LEX	STACK	0	0	1
LEX	STACK	0	-1