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

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

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

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

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