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