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