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