SN4 ""

No	Pattern	Freq
1	[adv] [adj] at the time	227
2	[adv] [verb] at the time	224
3	[adv] [adj] at the time	172
4	[adv] [vb pp] at the time	144
5	[adv] [adv] at the time	50
6	[adv] [num] at the time	49
7	[adv] [adv] at the time	48
8	[adv] [vb infin] at the time	46
9	[adv] [conj] at the time	30
10	[adv] know at the time	24
11	[adv] know at the time	15
12	[adv] [v-ing] at the time	14
13	[adv] [vb past] at the time	14
14	[adv] that at the time	12
15	[adv] [noun] at the time	12
16	[adv] that at the time	12
17	[adv] [that] at the time	12
18	[adv] [subord] at the time	11
19	[adv] available at the time	9
20	[adv] there at the time	9
21	[adv] there at the time	9
22	[adv] available at the time	9
23	[adv] realise at the time	9
24	[adv] known at the time	8
25	[adv] realise at the time	7
26	[adv] [coord] at the time	7
27	[adv] think at the time	7
28	[adv] appreciate at the time	6
29	[adv] investigated at the time	6
30	[adv] [noun sg] at the time	6