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

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

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

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

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