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