SN4 ""

No	Pattern	Freq
1	[noun] if [vb pp]	705
2	[noun sg] if [verb]	608
3	[noun pl] if [verb]	168
4	[noun] if require	122
5	[noun] if required	121
6	[noun] if [v-ing]	81
7	[noun] if needed	38
8	[noun] if need	38
9	[noun] if desire	36
10	[noun] if desired	36
11	[noun] if use	26
12	[noun] if used	23
13	[noun prp] if [verb]	20
14	[noun] if take	17
15	[noun] if taken	16
16	[noun] if do	14
17	[noun] if liked	14
18	[n mass] if [verb]	14
19	[noun] if like	14
20	[noun] if ask	12
21	[noun] if requested	12
22	[noun] if request	12
23	[noun] if give	11
24	[noun] if asked	11
25	[noun] if given	11
26	[noun] if found	9
27	[noun] if call	9
28	[noun] if called	9
29	[noun] if [vb base]	9
30	[noun] if find	9