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

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

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

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

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