SN4 ""

No	Pattern	Freq
1	[pron] have to keep	389
2	[pers pn] have to keep	374
3	you have to keep	104
4	you have to keep	104
5	[adv] have to keep	90
6	[vb mod] have to keep	90
7	[modal v] have to keep	90
8	i have to keep	83
9	i have to keep	83
10	we have to keep	78
11	we have to keep	77
12	[adv] have to keep	55
13	[noun] have to keep	53
14	he have to keep	43
15	he have to keep	43
16	will have to keep	41
17	[not/n't] have to keep	35
18	not have to keep	35
19	would have to keep	35
20	they have to keep	34
21	they have to keep	34
22	n't have to keep	28
23	she have to keep	27
24	[verb] have to keep	27
25	'll have to keep	27
26	she have to keep	27
27	would have to keep	22
28	[noun sg] have to keep	20
29	[noun pl] have to keep	19
30	have have to keep	15