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