SN4 ""

No	Pattern	Freq
1	[noun] when the [noun] [prep]	367
2	[noun sg] when the [noun] [prep]	233
3	time when the [noun] [prep]	141
4	time when the [noun] [prep]	124
5	[noun pl] when the [noun] [prep]	115
6	[adj] when the [noun] [prep]	92
7	[num] when the [noun] [prep]	92
8	day when the [noun] [prep]	34
9	[be] when the [noun] [prep]	26
10	be when the [noun] [prep]	26
11	moment when the [noun] [prep]	19
12	[noun prp] when the [noun] [prep]	18
13	[prep] when the [noun] [prep]	17
14	days when the [noun] [prep]	17
15	[prep] when the [noun] [prep]	17
16	times when the [noun] [prep]	17
17	[verb] when the [noun] [prep]	17
18	day when the [noun] [prep]	17
19	[adv] when the [noun] [prep]	16
20	[is] when the [noun] [prep]	16
21	moment when the [noun] [prep]	16
22	[adv] when the [noun] [prep]	15
23	year when the [noun] [prep]	15
24	period when the [noun] [prep]	14
25	period when the [noun] [prep]	14
26	[was/were] when the [noun] [prep]	10
27	year when the [noun] [prep]	10
28	is when the [noun] [prep]	9
29	date when the [noun] [prep]	9
30	was when the [noun] [prep]	9