SN4 ""

No	Pattern	Freq
1	[pers pn] must be [vb pp]	1929
2	it must be [vb pp]	1391
3	it must be [vb pp]	1391
4	[Wh det] must be [vb pp]	471
5	which must be [vb pp]	414
6	which must be [vb pp]	414
7	they must be [vb pp]	303
8	they must be [vb pp]	290
9	[pron] must be said	181
10	[pron] must be remembered	177
11	[pron] must be done	103
12	[indef pn] must be [vb pp]	98
13	he must be [vb pp]	92
14	he must be [vb pp]	87
15	[pron] must be stressed	69
16	[pron] must be admitted	63
17	what must be [vb pp]	57
18	what must be [vb pp]	57
19	you must be [vb pp]	56
20	you must be [vb pp]	55
21	something must be [vb pp]	53
22	something must be [vb pp]	53
23	[pron] must be made	51
24	who must be [vb pp]	47
25	who must be [vb pp]	47
26	[Wh pn] must be [vb pp]	47
27	[pron] must be noted	46
28	she must be [vb pp]	42
29	she must be [vb pp]	42
30	[pron] must be seen	42