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

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

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

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

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