SN4 ""

No	Pattern	Freq
1	[noun] at a time when [noun pl]	30
2	[noun sg] at a time when [noun pl]	20
3	[verb] at a time when [noun pl]	17
4	[adj] at a time when [noun pl]	8
5	[vb pp] at a time when [noun pl]	7
6	[noun pl] at a time when [noun pl]	5
7	[vb past] at a time when [noun pl]	5
8	at a time when [adj] [noun pl]	94
9	at a time when [adj] [noun pl]	61
10	at a time when [art] [noun pl]	32
11	at a time when the [noun pl]	32
12	at a time when the [noun pl]	32
13	at a time when [art] [noun pl]	32
14	at a time when [det] [noun pl]	27
15	at a time when [noun] [noun pl]	27
16	at a time when [noun sg] [noun pl]	24
17	at a time when [pron] [noun pl]	9
18	at a time when [pos pn] [noun pl]	9
19	at a time when many [noun pl]	8
20	at a time when many [noun pl]	8
21	at a time when most [noun pl]	7
22	at a time when most [noun pl]	7
23	at a time when such [noun pl]	5
24	at a time when such [noun pl]	5
25	at a time when their [noun pl]	5
26	at a time when their [noun pl]	5
27	at a time when [noun pl] [be]	47
28	at a time when [noun pl] be	47
29	at a time when [noun pl] were	25
30	at a time when [noun pl] [was/were]	25