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