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

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

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

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

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