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

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

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

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

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