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

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

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

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

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