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

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

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

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

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