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

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

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

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

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