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