SN4 ""

No	Pattern	Freq
1	be [v-ing] at the time	84
2	[be] [v-ing] at the time	84
3	[was/were] [v-ing] at the time	65
4	was [v-ing] at the time	43
5	[noun] [v-ing] at the time	34
6	were [v-ing] at the time	22
7	[noun sg] [v-ing] at the time	18
8	[prep] [v-ing] at the time	18
9	[prep] [v-ing] at the time	18
10	[adv] [v-ing] at the time	14
11	[noun pl] [v-ing] at the time	14
12	[verb] [v-ing] at the time	13
13	[not/n't] [v-ing] at the time	7
14	of [v-ing] at the time	7
15	remember [v-ing] at the time	7
16	of [v-ing] at the time	7
17	[adv] [v-ing] at the time	7
18	not [v-ing] at the time	7
19	[am/are] [v-ing] at the time	6
20	[vb base] [v-ing] at the time	6
21	[conj] [v-ing] at the time	6
22	[pron] [v-ing] at the time	5
23	remember [v-ing] at the time	5
24	[pers pn] [v-ing] at the time	5
25	[is] [v-ing] at the time	5
26	[vb past] [v-ing] at the time	5
27	[v-ing] [adv] at the time	34
28	[v-ing] [noun] at the time	28
29	[v-ing] [adv prt] at the time	24
30	[v-ing] [pron] at the time	15