SN4 ""

No	Pattern	Freq
1	[verb] [prep] the [noun] when	360
2	[verb] [prep] the [noun sg] when	268
3	[vb pp] [prep] the [noun] when	139
4	[verb] [prep] the time when	96
5	[verb] [prep] the time when	90
6	[verb] [prep] the day when	82
7	[verb] [prep] the [noun pl] when	77
8	[verb] in the [noun] when	69
9	[verb] at the [noun] when	59
10	[vb past] [prep] the [noun] when	55
11	[v-ing] [prep] the [noun] when	50
12	[verb] [prep] the days when	45
13	[verb] for the [noun] when	40
14	[verb] [prep] the moment when	38
15	[vb base] [prep] the [noun] when	37
16	[verb] [prep] the day when	37
17	[verb] [prep] the moment when	37
18	[to-vb] [prep] the [noun] when	33
19	[verb] to the [noun] when	30
20	[verb] from the [noun] when	30
21	[vb -s] [prep] the [noun] when	25
22	[vb infin] [prep] the [noun] when	21
23	[verb] of the [noun] when	20
24	[verb] on the [noun] when	19
25	wait [prep] the [noun] when	19
26	[verb] [prep] the date when	18
27	[verb] [prep] the date when	18
28	[verb] [prep] the [noun prp] when	15
29	[verb] during the [noun] when	15
30	[verb] [prep] the period when	12