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

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

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

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

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