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

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

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

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

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