SN4 ""

No	Pattern	Freq
1	[conj] if a [noun sg]	536
2	[verb] if a [noun sg]	299
3	[adv] if a [noun sg]	288
4	that if a [noun sg]	269
5	that if a [noun sg]	269
6	[that] if a [noun sg]	269
7	[adv] if a [noun sg]	266
8	[noun] if a [noun sg]	250
9	[coord] if a [noun sg]	226
10	[noun sg] if a [noun sg]	188
11	[prep] if a [noun sg]	151
12	[prep] if a [noun sg]	151
13	as if a [noun sg]	146
14	as if a [noun sg]	146
15	[adj] if a [noun sg]	101
16	even if a [noun sg]	97
17	even if a [noun sg]	97
18	[vb pp] if a [noun sg]	97
19	and if a [noun sg]	96
20	and if a [noun sg]	96
21	but if a [noun sg]	91
22	but if a [noun sg]	91
23	[adj] if a [noun sg]	66
24	[vb infin] if a [noun sg]	66
25	[to-vb] if a [noun sg]	59
26	[noun pl] if a [noun sg]	53
27	[subord] if a [noun sg]	41
28	or if a [noun sg]	39
29	or if a [noun sg]	39
30	[pron] if a [noun sg]	37