SN4 ""

No	Pattern	Freq
1	[be] [vb pp] is [conj]	285
2	be [vb pp] is [conj]	285
3	[be] [vb pp] is [conj]	147
4	be [vb pp] is [conj]	147
5	[verb] [vb pp] is [conj]	128
6	have [vb pp] is [conj]	124
7	[adv] [vb pp] is [conj]	87
8	[adv] [vb pp] is [conj]	75
9	[is] [vb pp] is [conj]	59
10	is [vb pp] is [conj]	56
11	[vb base] [vb pp] is [conj]	54
12	[vb -s] [vb pp] is [conj]	52
13	[noun] [vb pp] is [conj]	52
14	has [vb pp] is [conj]	41
15	[noun sg] [vb pp] is [conj]	37
16	[being] [vb pp] is [conj]	29
17	[been] [vb pp] is [conj]	29
18	being [vb pp] is [conj]	29
19	been [vb pp] is [conj]	29
20	have [vb pp] is [conj]	27
21	've [vb pp] is [conj]	24
22	[noun pl] [vb pp] is [conj]	15
23	[am/are] [vb pp] is [conj]	13
24	[not/n't] [vb pp] is [conj]	12
25	not [vb pp] is [conj]	12
26	[vb infin] [vb pp] is [conj]	11
27	's [vb pp] is [conj]	11
28	have [vb pp] is [conj]	10
29	to have [vb pp] is [conj]	10
30	often [vb pp] is [conj]	10