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