SN4 ""

No	Pattern	Freq
1	[verb] at the time	1400
2	[verb] at the time	1393
3	[vb pp] at the time	657
4	[vb past] at the time	332
5	[v-ing] at the time	192
6	[vb infin] at the time	82
7	say at the time	73
8	know at the time	64
9	think at the time	61
10	[vb base] at the time	57
11	said at the time	57
12	[to-vb] at the time	53
13	make at the time	46
14	made at the time	43
15	do at the time	43
16	exist at the time	36
17	look at the time	30
18	thought at the time	29
19	known at the time	28
20	[vb -s] at the time	27
21	write at the time	26
22	feel at the time	26
23	seem at the time	24
24	have at the time	24
25	had at the time	20
26	know at the time	19
27	seemed at the time	18
28	look at the time	16
29	happen at the time	16
30	work at the time	15