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

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

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

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

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