SN4 ""

No	Pattern	Freq
1	[pers pn] must be [verb]	2447
2	[pers pn] must be [verb]	2446
3	[pers pn] must be [vb pp]	1930
4	it must be [verb]	1448
5	[pers pn] must be [v-ing]	503
6	they must be [verb]	350
7	he must be [verb]	199
8	you must be [verb]	188
9	[pers pn] must be remember	176
10	[pers pn] must be remembered	175
11	[pers pn] must be say	174
12	[pers pn] must be said	170
13	she must be [verb]	105
14	i must be [verb]	72
15	[pers pn] must be stress	69
16	[pers pn] must be stressed	69
17	[pers pn] must be do	65
18	[pers pn] must be joke	65
19	[pers pn] must be joking	65
20	we must be [verb]	63
21	[pers pn] must be admit	62
22	[pers pn] must be admitted	62
23	[pers pn] must be get	51
24	[pers pn] must be go	47
25	[pers pn] must be getting	46
26	[pers pn] must be going	45
27	[pers pn] must be note	45
28	[pers pn] must be noted	45
29	[pers pn] must be make	43
30	[pers pn] must be see	40