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