SN4 ""

No	Pattern	Freq
1	[prep] if [pers pn] [verb]	3116
2	[prep] if [pers pn] [verb]	3115
3	as if [pers pn] [verb]	2856
4	as if [pers pn] [verb]	2856
5	[prep] if [pers pn] [vb past]	2444
6	[prep] if [pers pn] have	1891
7	[prep] if [pers pn] had	1206
8	[prep] if he [verb]	952
9	[prep] if she [verb]	558
10	[prep] if [pers pn] [vb base]	488
11	[prep] if they [verb]	449
12	[prep] if it [verb]	421
13	[prep] if [pers pn] 'd	336
14	[prep] if i [verb]	317
15	[prep] if you [verb]	301
16	[prep] if [pers pn] do	221
17	[prep] if [pers pn] [vb -s]	183
18	[prep] if [pers pn] did	160
19	[prep] if [pers pn] 've	143
20	[prep] if we [verb]	114
21	[prep] if [pers pn] know	101
22	[prep] if [pers pn] have	100
23	[prep] if [pers pn] want	97
24	[prep] if [pers pn] knew	88
25	[prep] if [pers pn] has	62
26	[prep] if [pers pn] need	62
27	[prep] if [pers pn] wanted	62
28	[prep] if [pers pn] do	49
29	to if [pers pn] [verb]	47
30	to if [pers pn] [verb]	47