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

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

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

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

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