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

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

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

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

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