SN4 ""

No	Pattern	Freq
1	[verb] at a [adj] time [prep]	37
2	[noun] at a [adj] time [prep]	22
3	[vb pp] at a [adj] time [prep]	19
4	come at a [adj] time [prep]	17
5	[noun sg] at a [adj] time [prep]	14
6	[vb -s] at a [adj] time [prep]	8
7	come at a [adj] time [prep]	7
8	comes at a [adj] time [prep]	6
9	[adv] at a [adj] time [prep]	5
10	[noun pl] at a [adj] time [prep]	5
11	at a [adv] [adj] time [prep]	17
12	at a [adv] [adj] time [prep]	17
13	at a very [adj] time [prep]	5
14	at a very [adj] time [prep]	5
15	at a [adj] time [conj] [prep]	5
16	at a [adj] time [prep] [art]	40
17	at a [adj] time [prep] [art]	40
18	at a [adj] time [prep] the	33
19	at a [adj] time [prep] the	33
20	at a [adj] time [prep] [noun]	21
21	at a [adj] time [prep] [noun sg]	12
22	at a [adj] time [prep] [pos pn]	9
23	at a [adj] time [prep] [pron]	9
24	at a [adj] time [prep] [adj]	7
25	at a [adj] time [prep] [noun prp]	7
26	at a [adj] time [prep] a	7
27	at a [adj] time [prep] a	6