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