SN4 ""

No	Pattern	Freq
1	[be] [vb pp] both	515
2	be [vb pp] both	515
3	[verb] [vb pp] both	331
4	have [vb pp] both	323
5	[be] [vb pp] both	156
6	be [vb pp] both	156
7	[adv] [vb pp] both	144
8	[adv] [vb pp] both	141
9	[was/were] [vb pp] both	140
10	[vb -s] [vb pp] both	104
11	has [vb pp] both	100
12	[is] [vb pp] both	89
13	[vb past] [vb pp] both	87
14	is [vb pp] both	86
15	was [vb pp] both	86
16	had [vb pp] both	80
17	[vb base] [vb pp] both	78
18	[been] [vb pp] both	70
19	been [vb pp] both	70
20	have [vb pp] both	63
21	were [vb pp] both	54
22	[noun] [vb pp] both	52
23	[am/are] [vb pp] both	48
24	are [vb pp] both	47
25	[noun sg] [vb pp] both	29
26	have [vb pp] both	26
27	[vb infin] [vb pp] both	26
28	[noun pl] [vb pp] both	22
29	[v-ing] [vb pp] both	18
30	having [vb pp] both	18