SN4 ""

No	Pattern	Freq
1	[verb] [vb pp] in the past	257
2	have [vb pp] in the past	252
3	[be] [vb pp] in the past	160
4	be [vb pp] in the past	160
5	[been] [vb pp] in the past	125
6	been [vb pp] in the past	125
7	[vb base] [vb pp] in the past	119
8	have [vb pp] in the past	84
9	[adv] [vb pp] in the past	75
10	[vb -s] [vb pp] in the past	71
11	[adv] [vb pp] in the past	65
12	has [vb pp] in the past	63
13	[vb past] [vb pp] in the past	53
14	had [vb pp] in the past	48
15	[noun] [vb pp] in the past	47
16	've [vb pp] in the past	33
17	[noun pl] [vb pp] in the past	25
18	[was/were] [vb pp] in the past	22
19	[noun sg] [vb pp] in the past	20
20	was [vb pp] in the past	12
21	[not/n't] [vb pp] in the past	10
22	were [vb pp] in the past	10
23	not [vb pp] in the past	10
24	have [vb pp] in the past	8
25	[vb infin] [vb pp] in the past	8
26	's [vb pp] in the past	8
27	[conj] [vb pp] in the past	8
28	not [vb pp] in the past	7
29	often [vb pp] in the past	6
30	always [vb pp] in the past	6