SN4 ""

No	Pattern	Freq
1	is [adj] [to-vb] the [adj]	609
2	is possible [to-vb] the [adj]	83
3	is necessary [to-vb] the [adj]	68
4	is important [to-vb] the [adj]	66
5	is likely [to-vb] the [adj]	52
6	is difficult [to-vb] the [adj]	46
7	is [adj] [to-vb] the [det]	37
8	is [adj] [to-vb] the same	36
9	is [adj] [to-vb] the same	36
10	is able [to-vb] the [adj]	28
11	is [adj] to see the [adj]	27
12	is impossible [to-vb] the [adj]	27
13	is [adj] [to-vb] the [num ord]	26
14	is interesting [to-vb] the [adj]	25
15	is [adj] [to-vb] the [num]	24
16	is [adj] to consider the [adj]	23
17	is essential [to-vb] the [adj]	21
18	is [adj] to use the [adj]	20
19	is easy [to-vb] the [adj]	20
20	is unlikely [to-vb] the [adj]	19
21	is [adj] [to-vb] the [adj -est]	18
22	is [adj] to note the [adj]	16
23	is [adj] [to-vb] the two	15
24	is [adj] to examine the [adj]	15
25	is [adj] [to-vb] the two	15
26	is hard [to-vb] the [adj]	14
27	is [adj] to have the [adj]	13
28	is [adj] to understand the [adj]	13
29	is [adj] to get the [adj]	12
30	is [adj] [to-vb] the [adj -er]	12