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