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

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

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

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

(0)(1 18 3)(2 7 4)(5 12 9)(6 17 14)(8)(10)(11)(13)(15)(16)(19)(20)