SN4 ""

No	Pattern	Freq
1	have [vb pp] since the [adj]	104
2	[verb] [vb pp] since the [adj]	104
3	[verb] [vb pp] since the [adj]	52
4	[vb base] [vb pp] since the [adj]	36
5	have [vb pp] since the [adj]	35
6	[vb -s] [vb pp] since the [adj]	34
7	[vb past] [vb pp] since the [adj]	33
8	had [vb pp] since the [adj]	33
9	has [vb pp] since the [adj]	32
10	[verb] [vb pp] since the [num]	27
11	[verb] [vb pp] since the [num ord]	23
12	[verb] [vb pp] since the early	18
13	[verb] [vb pp] since the early	18
14	[verb] changed since the [adj]	12
15	[verb] [vb pp] since the 1960s	7
16	[verb] [vb pp] since the second	7
17	[verb] [vb pp] since the second	7
18	[verb] [vb pp] since the 1960s	7
19	[verb] existed since the [adj]	6
20	[verb] [vb pp] since the last	6
21	[verb] occurred since the [adj]	6
22	[verb] [vb pp] since the last	6
23	[verb] [vb pp] since the 1950s	5
24	[verb] [vb pp] since the 1970s	5
25	[verb] [vb pp] since the 1930s	5
26	[verb] increased since the [adj]	5
27	[verb] [vb pp] since the first	5
28	[verb] [vb pp] since the 1970s	5
29	[verb] [vb pp] since the 1930s	5
30	[verb] [vb pp] since the first	5