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

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

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

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

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