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

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

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

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

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