SN4 ""

No	Pattern	Freq
1	[to-vb] if the [noun]	387
2	[to-vb] if the [noun sg]	291
3	to see if the [noun]	160
4	[to-vb] if the [noun pl]	75
5	to know if the [noun]	25
6	to determine if the [noun]	16
7	[to-vb] if the [noun prp]	15
8	to do if the [noun]	11
9	to wonder if the [noun]	9
10	to decide if the [noun]	8
11	to check if the [noun]	8
12	to ask if the [noun]	6
13	to tell if the [noun]	6
14	[to-vb] if the [n mass]	6
15	to happen if the [noun]	6
16	to say if the [noun]	6
17	[to-vb] if the relationship	5
18	to resign if the [noun]	5