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