SN4 ""

No	Pattern	Freq
1	[was/were] at the time [prep]	33
2	[was/were] at the time [prep]	33
3	[was/were] at the time of	29
4	[was/were] at the time of	29
5	[was/were] at the time [art]	11
6	[was/were] at the time [art]	11
7	[was/were] at the time [verb]	9
8	[was/were] at the time [adv]	8
9	[was/were] at the time a	7
10	[was/were] at the time a	7
11	[was/were] at the time [v-ing]	5
12	[was/were] at the time [adv]	5
13	[pron] [was/were] at the time	64
14	[pers pn] [was/were] at the time	38
15	[noun] [was/were] at the time	24
16	it [was/were] at the time	22
17	it [was/were] at the time	22
18	[Wh pn] [was/were] at the time	13
19	who [was/were] at the time	12
20	who [was/were] at the time	12
21	[noun sg] [was/were] at the time	10
22	[noun pl] [was/were] at the time	9
23	there [was/were] at the time	8
24	[ex0] [was/were] at the time	8
25	there [was/were] at the time	8
26	they [was/were] at the time	7
27	they [was/were] at the time	7
28	[Wh det] [was/were] at the time	5
29	[was/were] [verb] at the time	209
30	[was/were] [adj] at the time	162