1:1-1:3	TYP	typ
1:5-1:5	ID	a
1:7-1:7	EQUALS	=
1:9-1:11	INT	int
2:1-2:3	TYP	typ
2:5-2:5	ID	b
2:7-2:7	EQUALS	=
2:9-2:9	LBRACKET	(
2:10-2:10	ID	x
2:11-2:11	COLON	:
2:13-2:13	LBRACKET	(
2:14-2:14	ID	y
2:15-2:15	COLON	:
2:17-2:17	LBRACKET	(
2:18-2:18	ID	z
2:19-2:19	COLON	:
2:21-2:21	ID	a
2:22-2:22	RBRACKET	)
2:23-2:23	RBRACKET	)
2:24-2:24	RBRACKET	)
	EOF