(0 20 17)(1 21 5)(2 7 3)(4 19 12 10 9)(6 15 13 11 8)(14 18 16)
ALLOWS (11/8)-SEQUENCE
1: (0 1 17)
(0)(1 20 17 21 5)(2 7 3)(4 19 12 10 9)(6 15 13 11 8)(14 18 16)
2: (5 17 21)
(0)(1 20 17)(2 7 3)(4 19 12 10 9)(5)(6 15 13 11 8)(14 18 16)(21)
3: (4 19 12)
(0)(1 20 17)(2 7 3)(4 10 9)(5)(6 15 13 11 8)(12)(14 18 16)(19)(21)
4: (1 20 17)
(0)(1)(2 7 3)(4 10 9)(5)(6 15 13 11 8)(12)(14 18 16)(17)(19)(20)(21)