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