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