SN4 ""

No	Pattern	Freq
1	[noun sg] is often [verb] [adj]	7
2	[noun] is often [verb] [adj]	7
3	is often [adj] [verb] [adj]	16
4	is often [adj] [verb] [adj]	16
5	is often [verb] [verb] [adj]	13
6	is often [vb pp] [verb] [adj]	13
7	is often used [verb] [adj]	9
8	is often use [verb] [adj]	9
9	is often possible [verb] [adj]	7
10	is often possible [verb] [adj]	7
11	is often difficult [verb] [adj]	5
12	is often difficult [verb] [adj]	5
13	is often [verb] [prep] [adj]	93
14	is often [verb] [prep] [adj]	93
15	is often [verb] [conj] [adj]	36
16	is often [verb] by [adj]	33
17	is often [verb] by [adj]	33
18	is often [verb] [subord] [adj]	21
19	is often [verb] as [adj]	18
20	is often [verb] as [adj]	18
21	is often [verb] in [adj]	15
22	is often [verb] in [adj]	15
23	is often [verb] with [adj]	14
24	is often [verb] with [adj]	14
25	is often [verb] [verb] [adj]	13
26	is often [verb] [to-vb] [adj]	13
27	is often [verb] [art] [adj]	11
28	is often [verb] [art] [adj]	11
29	is often [verb] that [adj]	10
30	is often [verb] [that] [adj]	10