SN4 ""

No	Pattern	Freq
1	[verb] at the time	1393
2	[vb pp] at the time	657
3	[vb past] at the time	332
4	[v-ing] at the time	192
5	[vb infin] at the time	82
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	57
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	30
17	thought at the time	29
18	known at the time	28
19	[vb -s] at the time	27
20	write at the time	26
21	feel at the time	26
22	seem at the time	24
23	have 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	16
29	live at the time	15
30	work at the time	15