SN4 ""

No	Pattern	Freq
1	[noun] at a time [conj]	98
2	[noun sg] at a time [conj]	63
3	[noun pl] at a time [conj]	34
4	[pron] at a time [conj]	23
5	[indef pn] at a time [conj]	23
6	one at a time [conj]	23
7	one at a time [conj]	23
8	[adj] at a time [conj]	16
9	[verb] at a time [conj]	14
10	[num] at a time [conj]	11
11	[vb pp] at a time [conj]	10
12	[adv] at a time [conj]	9
13	step at a time [conj]	8
14	step at a time [conj]	7
15	[adv] at a time [conj]	6
16	little at a time [conj]	5
17	day at a time [conj]	5
18	two at a time [conj]	5
19	little at a time [conj]	5
20	two at a time [conj]	5
21	at [det] a time [conj]	5
22	at such a time [conj]	5
23	at such a time [conj]	5
24	at [adj] a time [conj]	5
25	at a [adj] time [conj]	51
26	at a [adj] time [conj]	37
27	at a [adj -er] time [conj]	14
28	at a later time [conj]	11
29	at a late time [conj]	11
30	at a particular time [conj]	8