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