1
1-1
1-1-1
1-1-2
1-1-3
1-2
1-2-1
1-2-2
1-2-3
1-3
1-3-1
1-3-2
1-3-3
2
2-1
2-1-1
2-1-2
2-1-3
2-2
2-2-1
2-2-2
2-2-3
2-3
2-3-1
2-3-2
2-3-3
3
3-1
3-1-1
3-1-2
3-1-3
3-2
3-2-1
3-2-2
3-2-3
3-3
3-3-1
3-3-2
3-3-3