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