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