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

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

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

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

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