SN4 ""

No	Pattern	Freq
1	[verb] to do [pron] [det]	141
2	[noun] to do [pron] [det]	46
3	[vb infin] to do [pron] [det]	37
4	[v-ing] to do [pron] [det]	34
5	have to do [pron] [det]	33
6	[noun sg] to do [pron] [det]	32
7	[adj] to do [pron] [det]	30
8	[adj] to do [pron] [det]	26
9	want to do [pron] [det]	22
10	[adv] to do [pron] [det]	22
11	go to do [pron] [det]	21
12	going to do [pron] [det]	21
13	[vb past] to do [pron] [det]	20
14	[vb pp] to do [pron] [det]	19
15	[vb base] to do [pron] [det]	18
16	have to do [pron] [det]	17
17	[pron] to do [pron] [det]	15
18	[pers pn] to do [pron] [det]	12
19	able to do [pron] [det]	11
20	able to do [pron] [det]	11
21	[vb -s] to do [pron] [det]	11
22	try to do [pron] [det]	10
23	[noun pl] to do [pron] [det]	10
24	[adv] to do [pron] [det]	10
25	[modal v] to do [pron] [det]	8
26	had to do [pron] [det]	8
27	[vb mod] to do [pron] [det]	8
28	used to do [pron] [det]	7
29	used to do [pron] [det]	7
30	want to do [pron] [det]	7