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

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

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

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

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