(0 17 4)(1 10 8)(2 20 18)(3 12 5)(6 15 7)(9 13 11)(14 19 16)
ALLOWS (11/8)-SEQUENCE
1: (4 15 17)
(0 17 7 6 15)(1 10 8)(2 20 18)(3 12 5)(4)(9 13 11)(14 19 16)
2: (14 19 16)
(0 17 7 6 15)(1 10 8)(2 20 18)(3 12 5)(4)(9 13 11)(14)(16)(19)
3: (0 17 7)
(0 6 15)(1 10 8)(2 20 18)(3 12 5)(4)(7)(9 13 11)(14)(16)(17)(19)
4: (3 12 5)
(0 6 15)(1 10 8)(2 20 18)(3)(4)(5)(7)(9 13 11)(12)(14)(16)(17)(19)