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

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

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

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

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