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

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

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

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

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