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