SN4 ""

No	Pattern	Freq
1	[noun sg] must be [adj]	942
2	[noun sg] must be able	84
3	[noun sg] must be available	36
4	[noun sg] must be capable	33
5	[noun sg] must be aware	32
6	[noun sg] must be satisfied	28
7	system must be [adj]	25
8	[noun sg] must be prepared	17
9	[noun sg] must be clear	15
10	[noun sg] must be free	15
11	[noun sg] must be good	14
12	[noun sg] must be careful	11
13	[noun sg] must be reasonable	11
14	court must be [adj]	10
15	[noun sg] must be open	9
16	[noun sg] must be due	9
17	water must be [adj]	8
18	[noun sg] must be adequate	8
19	[noun sg] must be equal	8
20	family must be [adj]	8
21	[noun sg] must be ready	7
22	[noun sg] must be present	7
23	[noun sg] must be concerned	7
24	information must be [adj]	7
25	company must be [adj]	7
26	site must be [adj]	7
27	process must be [adj]	7
28	life must be [adj]	6
29	party must be [adj]	6
30	consent must be [adj]	6