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