SN4 ""

No	Pattern	Freq
1	[verb] at the time	1393
2	[vb pp] at the time	656
3	[vb past] at the time	331
4	[v-ing] at the time	190
5	[vb infin] at the time	80
6	say at the time	73
7	know at the time	64
8	think at the time	61
9	said at the time	57
10	[vb base] at the time	56
11	[to-vb] at the time	53
12	make at the time	46
13	do at the time	43
14	made at the time	43
15	exist at the time	36
16	look at the time	29
17	thought at the time	29
18	known at the time	28
19	[vb -s] at the time	27
20	feel at the time	26
21	write at the time	26
22	have at the time	24
23	seem at the time	24
24	had at the time	20
25	know at the time	19
26	seemed at the time	18
27	happen at the time	16
28	look at the time	15
29	work at the time	15
30	did at the time	15