SN4 ""

No	Pattern	Freq
1	[verb] to do on	50
2	[noun] to do on	24
3	[pron] to do on	24
4	[noun sg] to do on	19
5	[adj] to do on	18
6	[vb past] to do on	14
7	[vb pp] to do on	12
8	[v-ing] to do on	11
9	[indef pn] to do on	11
10	[det] to do on	9
11	go to do on	8
12	[adj] to do on	8
13	going to do on	8
14	work to do on	8
15	work to do on	8
16	have to do on	7
17	[pers pn] to do on	6
18	[vb base] to do on	6
19	want to do on	6
20	what to do on	5
21	what to do on	5
22	[Wh det] to do on	5
23	much to do on	5
24	much to do on	5
25	to do [adv] on	54
26	to do [adv] on	54
27	to do [pron] on	53
28	to do so on	40
29	to do so on	40
30	to do [pers pn] on	37