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

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

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

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

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