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