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

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

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

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

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