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

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

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

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

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