SN4 ""

No	Pattern	Freq
1	[was/were] [verb] at the time	209
2	[was/were] [adj] at the time	162
3	[was/were] [vb pp] at the time	141
4	[was/were] [adj] at the time	127
5	[was/were] [v-ing] at the time	66
6	[was/were] [adv] at the time	53
7	[was/were] [num] at the time	32
8	[was/were] [adv] at the time	31
9	[was/were] [adv prt] at the time	14
10	[was/were] [noun] at the time	12
11	[was/were] there at the time	9
12	[was/were] there at the time	9
13	[was/were] do at the time	8
14	[was/were] working at the time	8
15	[was/were] doing at the time	8
16	[was/were] [noun sg] at the time	8
17	[was/were] work at the time	8
18	[was/were] say at the time	7
19	[was/were] not at the time	7
20	[was/were] [not/n't] at the time	7
21	[was/were] in at the time	6
22	[was/were] ill at the time	6
23	[was/were] available at the time	6
24	[was/were] live at the time	6
25	[was/were] ill at the time	6
26	[was/were] living at the time	6
27	[was/were] pregnant at the time	6
28	[was/were] pregnant at the time	6
29	[was/were] in at the time	6
30	[was/were] available at the time	6