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

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

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

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

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