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

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

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

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

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