2-3-2-4
2-3-2-6
2-3-2-7
2-3-3-4
2-3-3-6
2-3-3-7
2-3-7-4
2-3-7-6
2-3-7-7
2-3-8-4
2-3-8-6
2-3-8-7
2-4-2-4
2-4-2-6
2-4-2-7
2-4-3-4
2-4-3-6
2-4-3-7
2-4-7-4
2-4-7-6
2-4-7-7
2-4-8-4
2-4-8-6
2-4-8-7
2-7-2-4
2-7-2-6
2-7-2-7
2-7-3-4
2-7-3-6
2-7-3-7
2-7-7-4
2-7-7-6
2-7-7-7
2-7-8-4
2-7-8-6
2-7-8-7