SN4 ""

No	Pattern	Freq
1	[noun] must be [verb] for	230
2	[noun sg] must be [verb] for	153
3	[noun pl] must be [verb] for	69
4	[pron] must be [verb] for	61
5	[pers pn] must be [verb] for	41
6	[conj] must be [verb] for	17
7	which must be [verb] for	16
8	allowance must be [verb] for	16
9	allowance must be [verb] for	16
10	which must be [verb] for	16
11	[Wh det] must be [verb] for	16
12	[adj] must be [verb] for	14
13	[det] must be [verb] for	12
14	they must be [verb] for	12
15	they must be [verb] for	12
16	number must be [verb] for	10
17	number must be [verb] for	10
18	[that] must be [verb] for	9
19	time must be [verb] for	9
20	that must be [verb] for	9
21	time must be [verb] for	9
22	that must be [verb] for	9
23	you must be [verb] for	8
24	[coord] must be [verb] for	8
25	this must be [verb] for	8
26	provision must be [verb] for	8
27	you must be [verb] for	8
28	this must be [verb] for	8
29	provision must be [verb] for	7
30	it must be [verb] for	7