SN4 ""

No	Pattern	Freq
1	although it is [adj] [verb]	138
2	although it is [adj] [verb]	138
3	although it is [adj] [to-vb]	137
4	although it is [adj] [verb]	135
5	although it is possible [verb]	32
6	although it is possible [verb]	32
7	although it is difficult [verb]	30
8	although it is difficult [verb]	30
9	although it is hard [verb]	10
10	although it is impossible [verb]	10
11	although it is hard [verb]	10
12	although it is impossible [verb]	10
13	although it is [adj] see	9
14	although it is [adj] to see	9
15	although it is easy [verb]	9
16	although it is tempting [verb]	8
17	although it is tempting [verb]	8
18	although it is [adj] make	7
19	although it is easy [verb]	7
20	although it is [adj] to make	7
21	although it is [adj] say	5
22	although it is [adj] do	5
23	although it is [adj] to do	5
24	although it is [adj] to say	5