(0 20 7 5 3)(1 4 2)(6 14 12)(8 18 11)(9 17 15 13 10)(16 21 19)
ALLOWS (11/8)-SEQUENCE
1: (3 17 20)
(0 20 15 13 10 9 17)(1 4 2)(3 7 5)(6 14 12)(8 18 11)(16 21 19)
2: (16 21 19)
(0 20 15 13 10 9 17)(1 4 2)(3 7 5)(6 14 12)(8 18 11)(16)(19)(21)
3: (0 20 10)
(0 9 17)(1 4 2)(3 7 5)(6 14 12)(8 18 11)(10 15 13)(16)(19)(20)(21)
4: (8 18 11)
(0 9 17)(1 4 2)(3 7 5)(6 14 12)(8)(10 15 13)(11)(16)(18)(19)(20)(21)