SN4 ""

No	Pattern	Freq
1	[noun] must be [vb pp] to	472
2	[noun sg] must be [vb pp] to	346
3	[noun pl] must be [vb pp] to	118
4	[pron] must be [vb pp] to	98
5	[pers pn] must be [vb pp] to	62
6	it must be [vb pp] to	33
7	it must be [vb pp] to	33
8	[conj] must be [vb pp] to	30
9	[Wh det] must be [vb pp] to	29
10	attention must be [vb pp] to	28
11	attention must be [vb pp] to	28
12	which must be [vb pp] to	27
13	which must be [vb pp] to	27
14	[coord] must be [vb pp] to	24
15	[adj] must be [vb pp] to	23
16	[det] must be [vb pp] to	19
17	and must be [vb pp] to	18
18	and must be [vb pp] to	18
19	they must be [vb pp] to	16
20	they must be [vb pp] to	14
21	[verb] must be [vb pp] to	13
22	consideration must be [vb pp] to	12
23	this must be [vb pp] to	11
24	consideration must be [vb pp] to	11
25	this must be [vb pp] to	11
26	regard must be [vb pp] to	9
27	regard must be [vb pp] to	9
28	[adv] must be [vb pp] to	8
29	[noun prp] must be [vb pp] to	7
30	[adv] must be [vb pp] to	7