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

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

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

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

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