SN4 ""

No	Pattern	Freq
1	[noun] must be [verb] by	501
2	[noun] must be [vb pp] by	501
3	[noun] must be accompanied by	44
4	[noun] must be accompany by	44
5	[noun] must be received by	20
6	[noun] must be made by	20
7	[noun] must be receive by	20
8	[noun] must be make by	20
9	[noun] must be support by	18
10	[noun] must be supported by	18
11	[noun] must be approve by	17
12	[noun] must be approved by	17
13	[noun] must be [adj] by	14
14	[noun] must be [adj] by	14
15	[noun] must be sign by	13
16	[noun] must be signed by	13
17	[noun] must be [adv] by	11
18	[noun] must be [adv prt] by	11
19	[noun] must be replaced by	10
20	[noun] must be replace by	10
21	[noun] must be in by	10
22	[noun] must be in by	10
23	[noun] must be matched by	9
24	[noun] must be match by	9
25	[noun] must be take by	8
26	[noun] must be back by	8
27	[noun] must be taken by	8
28	[noun] must be backed by	8
29	[noun] must be completed by	8
30	[noun] must be complete by	8