SN4 ""

No	Pattern	Freq
1	[prep] the time when	541
2	[prep] the time when	541
3	[prep] the time when	498
4	at the time when	265
5	at the time when	265
6	to the time when	63
7	to the time when	63
8	[prep] the times when	43
9	of the time when	36
10	of the time when	36
11	from the time when	35
12	from the time when	35
13	for the time when	25
14	for the time when	25
15	about the time when	23
16	about the time when	23
17	during the time when	11
18	during the time when	11
19	in the time when	9
20	in the time when	9
21	as the time when	8
22	as the time when	8
23	like the time when	7
24	since the time when	7
25	since the time when	7
26	between the time when	7
27	between the time when	7
28	like the time when	7
29	around the time when	6
30	around the time when	6