1	9□8□(7□654)○3□21
2	(98○7□654)○3□2□1
3	(9○8○76□543)○(2□1)
4	9□8□7○(65○4□3□21)
5	9○8□7□6○(5□4)○321
6	9○(8□7□654)○3□2○1
7	(98□7)○(65□43)□2□1
8	9○8□7○6○(5□43□2)□1
9	9□8□(76□5)○(4□3□21)
10	(9□8□7□6○54)○3○2□1
11	(9○8○7□6□5)○4□32□1
12	(987□(6□5□4)○3)○2□1
13	(9□87○(65□4))○3□2□1
14	9□8□(76□5)○4○(3○2□1)
15	9○(8□7○6○5)□43○(2□1)
16	(9□8□76○5□4)○(3□2○1)
17	(9□8□76○5□4)○(3○2□1)
18	(9□87○(65□4)□3)○(2□1)
19	9○8□7○6○(5○4□3)○2□1
20	9○(8□7○6○5□4)□3○2□1
21	(9○8○7□6□5)○4□3○2□1
22	9○8□7○(6□54○(3□2))□1
23	9○(8□(7□6)○5○43)□2○1
24	9○(8○(7□6)□5○43)□2○1
25	(9□8)○(76□5□4○3)○2□1
26	(9□8)○(76□5○4□3)○2□1
27	9□(87□6□5)○4)○(3○2□1)
28	(9□(87□6□5)○4)○(3□2○1)
29	9○((8□7○6□5)○4□3)□2○1
30	9○((8○7□6□5)○4□3)□2○1
31	(9□8)○(7○6□5□4○3)○2□1
32	(9□8)○(7○6□5○4□3)○2□1
33	(9□8□7○6)○(5□4○3)○2□1
34	(9□8□7○6)○(5○4□3)○2□1
35	(9□8○7□6)○(5□4○3)○2□1
36	(9□8○7□6)○(5○4□3)○2□1
37	(9○8□7□6)○(5□4○3)○2□1
38	(9○8□7□6)○(5○4□3)○2□1
39	(9□8)○(7○(6□5)□43□2)□1
40	((98□7□6)○(5□4)□3)○2□1
41	((98□7)○(6□5)□4□3)○2□1
42	(9□8○7○(6□5□4))○(3□2○1)
43	(9□8○7○(6□5□4))○(3○2□1)
44	(9○(8□7□6○5)□4)○(3□2○1)
45	(9○(8□7□6○5)□4)○(3○2□1)
46	(9○(8□7□6)○5□4)○(3□2○1)
47	(9○(8□7□6)○5□4)○(3○2□1)
48	(9○(8□7○6□5)□4)○(3□2○1)
49	(9○(8□7○6□5)□4)○(3○2□1)
50	(9○(8○7□6□5)□4)○(3□2○1)
51	(9○(8○7□6□5)□4)○(3○2□1)
52	(9□(8□7)○(6□5)○4)○3□2○1
53	(9□8)○((7□6)○(5□4)□3□2)□1