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

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

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

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

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