SN4 ""

No	Pattern	Freq
1	[pron] must be [adj]	1754
2	[pers pn] must be [adj]	1492
3	it must be [adj]	473
4	it must be [adj]	473
5	you must be [adj]	336
6	you must be [adj]	335
7	we must be [adj]	205
8	we must be [adj]	203
9	they must be [adj]	159
10	they must be [adj]	153
11	he must be [adj]	142
12	he must be [adj]	140
13	[pron] must be able	119
14	there must be [adj]	113
15	there must be [adj]	113
16	[ex0] must be [adj]	113
17	[pron] must be careful	112
18	i must be [adj]	108
19	i must be [adj]	106
20	[pron] must be prepared	82
21	[indef pn] must be [adj]	75
22	she must be [adj]	67
23	she must be [adj]	67
24	[pron] must be mad	58
25	one must be [adj]	56
26	one must be [adj]	56
27	[pron] must be aware	50
28	[Wh det] must be [adj]	50
29	which must be [adj]	43
30	which must be [adj]	43