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

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

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

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

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