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

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

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

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

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