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

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

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

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

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