1
2
3
--
1	1
2	2
3	3
--
1	1
2	2
3	3
--
[1,2,3]	1
[1,2,3]	2
[1,2,3]	3
--
1	1
1	2
1	3
1	4
2	1
2	2
2	3
2	4
3	1
3	2
3	3
3	4
--
[1,1,1]
[2,2,2]
[3,3,3]
--
[2,3,4]	1
[3,4,5]	2
[4,5,6]	3
--
0	1
0	2
0	3
--
0	1	1
0	2	2
0	3	3