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