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

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

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

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

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