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

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

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

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

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