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