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

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

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

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

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