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

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

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

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

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