SN4 ""

No	Pattern	Freq
1	[vb pp] at the time	656
2	made at the time	43
3	known at the time	28
4	published at the time	13
5	taken at the time	12
6	thought at the time	11
7	given at the time	11
8	written at the time	10
9	used at the time	10
10	said at the time	8
11	raised at the time	7
12	established at the time	7
13	investigated at the time	7
14	seen at the time	7
15	reported at the time	7
16	employed at the time	7
17	recognized at the time	6
18	done at the time	6
19	built at the time	6
20	told at the time	6
21	felt at the time	6
22	effected at the time	6
23	appreciated at the time	6
24	seemed at the time	6
25	accepted at the time	5
26	issued at the time	5
27	described at the time	5
28	determined at the time	5
29	observed at the time	5
30	understood at the time	5