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

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

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

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

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