(0 19 17)(1 20 9 8 3)(2 6 4)(5 18 16 11 7)(10 14 12)(13 21 15)
ALLOWS (11/8)-SEQUENCE
1: (0 1 17)
(0)(1 19 17 20 9 8 3)(2 6 4)(5 18 16 11 7)(10 14 12)(13 21 15)
2: (9 17 20)
(0)(1 19 17 8 3)(2 6 4)(5 18 16 11 7)(9)(10 14 12)(13 21 15)(20)
3: (5 18 16)
(0)(1 19 17 8 3)(2 6 4)(5 11 7)(9)(10 14 12)(13 21 15)(16)(18)(20)
4: (1 19 17)
(0)(1 8 3)(2 6 4)(5 11 7)(9)(10 14 12)(13 21 15)(16)(17)(18)(19)(20)