SN4 ""

No	Pattern	Freq
1	be [verb] [prep] the past	215
2	been [verb] [prep] the past	184
3	be [vb pp] [prep] the past	153
4	be [verb] over the past	69
5	be [v-ing] [prep] the past	62
6	be [verb] in the past	61
7	be [verb] for the past	53
8	be [verb] during the past	17
9	be do [prep] the past	15
10	be doing [prep] the past	14
11	be make [prep] the past	8
12	be made [prep] the past	8
13	be [verb] [prep] the past	7
14	were [verb] [prep] the past	7
15	was [verb] [prep] the past	6
16	be achieve [prep] the past	6
17	be achieved [prep] the past	6
18	be killed [prep] the past	5
19	be kill [prep] the past	5
20	be happening [prep] the past	5
21	be developed [prep] the past	5
22	be happen [prep] the past	5
23	be develop [prep] the past	5