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

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

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

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

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