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

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

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

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

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