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