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

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

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

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

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