(0 15 12 8 1)(2 20 18)(3 21 5)(4 16 13 10 6)(7 11 9)(14 19 17)
ALLOWS (11/8)-SEQUENCE
1: (0 2 12)

(0 8 1)(2 15 12 20 18)(3 21 5)(4 16 13 10 6)(7 11 9)(14 19 17)
2: (2 15 18)

(0 8 1)(2)(3 21 5)(4 16 13 10 6)(7 11 9)(12 20 18)(14 19 17)(15)
3: (14 19 17)

(0 8 1)(2)(3 21 5)(4 16 13 10 6)(7 11 9)(12 20 18)(14)(15)(17)(19)
4: (12 20 18)

(0 8 1)(2)(3 21 5)(4 16 13 10 6)(7 11 9)(12)(14)(15)(17)(18)(19)(20)