SN4 ""

No	Pattern	Freq
1	have [vb pp] [prep] the past	280
2	have [vb pp] [prep] the past	280
3	have [vb pp] in the past	123
4	has [vb pp] [prep] the past	105
5	have [vb pp] [prep] the past	101
6	have [vb pp] over the past	101
7	had [vb pp] [prep] the past	40
8	have [vb pp] for the past	30
9	have doubled [prep] the past	21
10	have done [prep] the past	20
11	have [vb pp] during the past	19
12	've [vb pp] [prep] the past	17
13	have had [prep] the past	10
14	have made [prep] the past	9
15	have happened [prep] the past	8
16	have died [prep] the past	7
17	have changed [prep] the past	7
18	have increased [prep] the past	6
19	have developed [prep] the past	6
20	have occurred [prep] the past	6
21	have tripled [prep] the past	6
22	's [vb pp] [prep] the past	5