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

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

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

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

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