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