SN4 ""

No	Pattern	Freq
1	[prep] [noun] at the time	592
2	[prep] [noun sg] at the time	298
3	in [noun] at the time	232
4	[prep] [noun prp] at the time	225
5	of [noun] at the time	141
6	[prep] [noun pl] at the time	58
7	on [noun] at the time	43
8	to [noun] at the time	34
9	for [noun] at the time	28
10	at [noun] at the time	23
11	[prep] force at the time	22
12	[prep] force at the time	22
13	by [noun] at the time	19
14	from [noun] at the time	13
15	with [noun] at the time	13
16	[prep] [n mass] at the time	12
17	[prep] existence at the time	11
18	[prep] existence at the time	11
19	[prep] england at the time	10
20	[prep] england at the time	10
21	[prep] use at the time	9
22	[prep] use at the time	9
23	[prep] europe at the time	9
24	[prep] europe at the time	9
25	[prep] britain at the time	8
26	under [noun] at the time	8
27	[prep] britain at the time	8
28	[prep] holiday at the time	7
29	[prep] age at the time	7
30	[prep] duty at the time	7