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

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

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

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

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