SN4 ""

No	Pattern	Freq
1	[vb base] if [pers pn] [vb mod]	966
2	[vb base] if [pers pn] can	453
3	[vb base] if you [vb mod]	388
4	see if [pers pn] [vb mod]	370
5	wonder if [pers pn] [vb mod]	290
6	[vb base] if i [vb mod]	202
7	[vb base] if [pers pn] could	180
8	[vb base] if we [vb mod]	137
9	doubt if [pers pn] [vb mod]	108
10	[vb base] if they [vb mod]	92
11	[vb base] if [pers pn] 'll	85
12	[vb base] if he [vb mod]	75
13	[vb base] if [pers pn] would	60
14	[vb base] if [pers pn] 'd	51
15	ask if [pers pn] [vb mod]	45
16	[vb base] if [pers pn] will	39
17	[vb base] if it [vb mod]	39
18	mean if [pers pn] [vb mod]	38
19	think if [pers pn] [vb mod]	32
20	[vb base] if she [vb mod]	31
21	[vb base] if [pers pn] might	26
22	[vb base] if [pers pn] should	20
23	know if [pers pn] [vb mod]	19
24	[vb base] if [pers pn] ca	19
25	say if [pers pn] [vb mod]	10
26	[vb base] if [pers pn] may	10
27	[vb base] if [pers pn] shall	8
28	[vb base] if [pers pn] must	8