SN4 ""

No	Pattern	Freq
1	[pron] [was/were] at the time	64
2	[pers pn] [was/were] at the time	38
3	[noun] [was/were] at the time	24
4	it [was/were] at the time	22
5	it [was/were] at the time	22
6	[Wh pn] [was/were] at the time	13
7	who [was/were] at the time	12
8	who [was/were] at the time	12
9	[noun sg] [was/were] at the time	10
10	[noun pl] [was/were] at the time	9
11	there [was/were] at the time	8
12	[ex0] [was/were] at the time	8
13	there [was/were] at the time	8
14	they [was/were] at the time	7
15	they [was/were] at the time	7
16	[Wh det] [was/were] at the time	5
17	[was/were] [verb] at the time	209
18	[was/were] [adj] at the time	162
19	[was/were] [vb pp] at the time	141
20	[was/were] [adj] at the time	127
21	[was/were] [v-ing] at the time	66
22	[was/were] [adv] at the time	53
23	[was/were] [num] at the time	32
24	[was/were] [adv] at the time	31
25	[was/were] [adv prt] at the time	14
26	[was/were] [noun] at the time	12
27	[was/were] there at the time	9
28	[was/were] there at the time	9
29	[was/were] do at the time	8
30	[was/were] working at the time	8