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

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

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

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

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