init
1	100
2	200
-
1	100
2	200
3	300
alt
100	DEFZ
200	DEFZ
-
0	100
0	200
3	300
4	400
opt
100	DEFZ
200	DEFZ
300	DEFZ
400	DEFZ
-
0	100
0	200
0	300
0	400