SN4 ""

No	Pattern	Freq
1	[pron] must be [noun] [noun]	71
2	[pers pn] must be [noun] [noun]	59
3	you must be [noun] [noun]	27
4	you must be [noun] [noun]	27
5	it must be [noun] [noun]	25
6	it must be [noun] [noun]	25
7	[adj] must be [noun] [noun]	16
8	[noun] must be [noun] [noun]	16
9	[det] must be [noun] [noun]	15
10	[ex0] must be [noun] [noun]	11
11	there must be [noun] [noun]	11
12	there must be [noun] [noun]	11
13	[noun sg] must be [noun] [noun]	9
14	this must be [noun] [noun]	8
15	this must be [noun] [noun]	8
16	that must be [noun] [noun]	5
17	that must be [noun] [noun]	5
18	[noun pl] must be [noun] [noun]	5
19	must [adv] be [noun] [noun]	5
20	must be [art] [noun] [noun]	90
21	must be [art] [noun] [noun]	90
22	must be a [noun] [noun]	54
23	must be a [noun] [noun]	50
24	must be the [noun] [noun]	32
25	must be the [noun] [noun]	32
26	must be [prep] [noun] [noun]	24
27	must be [prep] [noun] [noun]	24
28	must be [adj] [noun] [noun]	19
29	must be [adj] [noun] [noun]	14
30	must be [verb] [noun] [noun]	10