SN4 ""

No	Pattern	Freq
1	[noun] [vb mod] be kept	549
2	[noun sg] [modal v] be kept	264
3	[noun pl] [modal v] be kept	241
4	[noun] should be kept	191
5	[noun] should be kept	191
6	[noun] must be kept	104
7	[noun] must be kept	104
8	[noun] can be kept	81
9	[noun] can be kept	81
10	[noun] will be kept	64
11	[noun] will be kept	64
12	[noun] would be kept	44
13	[noun] would be kept	44
14	[noun] could be kept	35
15	[noun] could be kept	35
16	[n mass] [modal v] be kept	27
17	record [modal v] be kept	20
18	[noun] may be kept	17
19	[noun] may be kept	17
20	[noun prp] [modal v] be kept	16
21	records [modal v] be kept	14
22	[noun] shall be kept	11
23	[noun] shall be kept	11
24	people [modal v] be kept	8
25	people [modal v] be kept	8
26	hands [modal v] be kept	7
27	hand [modal v] be kept	7
28	record [modal v] be kept	6
29	fish [modal v] be kept	6
30	patient [modal v] be kept	6