SN4 ""

No	Pattern	Freq
1	[noun] of [noun] at a time	65
2	[noun sg] of [noun] at a time	49
3	[noun pl] of [noun] at a time	13
4	[adj] of [noun] at a time	8
5	[num] of [noun] at a time	5
6	couple of [noun] at a time	5
7	couple of [noun] at a time	5
8	of [adj] [noun] at a time	26
9	of [art] [noun] at a time	20
10	of [art] [noun] at a time	20
11	of [adj] [noun] at a time	15
12	of [noun] [noun] at a time	13
13	of the [noun] at a time	12
14	of the [noun] at a time	12
15	of [noun sg] [noun] at a time	10
16	of [num] [noun] at a time	9
17	of a [noun] at a time	8
18	of a [noun] at a time	7
19	of one [noun] at a time	5
20	of one [noun] at a time	5
21	of [noun] [noun] at a time	13
22	of [noun] [verb] at a time	7
23	of [noun] [noun sg] at a time	7
24	of [noun] [noun pl] at a time	5
25	of [noun] come at a time	5
26	of [noun] at a [adj] time	7
27	of [noun] at a [adj] time	7
28	of [noun] at a time when	33
29	of [noun] at a time [adv]	33
30	of [noun] at a time [Wh adv]	33