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

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

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

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

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