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