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