SN4 ""

No	Pattern	Freq
1	[verb] when we	224
2	[vb base] when we	119
3	know when we	99
4	[vb infin] when we	67
5	know when we	65
6	remember when we	55
7	see when we	34
8	remember when we	29
9	remember when we	23
10	know when we	21
11	[to-vb] when we	14
12	see when we	14
13	see when we	14
14	do when we	10
15	[v-ing] when we	10
16	say when we	9
17	to know when we	7
18	[vb pp] when we	6
19	[vb past] when we	6
20	wonder when we	6
21	doing when we	5
22	do when we	5