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

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

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

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

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