SN4 ""

No	Pattern	Freq
1	[noun pl] are [vb pp] [to-vb] the	558
2	[noun sg] are [vb pp] [to-vb] the	116
3	[noun] are used [to-vb] the	90
4	[noun] are required [to-vb] the	63
5	[noun] are designed [to-vb] the	56
6	[noun] are expected [to-vb] the	54
7	[noun] are needed [to-vb] the	43
8	[noun prp] are [vb pp] [to-vb] the	34
9	[n mass] are [vb pp] [to-vb] the	30
10	[noun] are intended [to-vb] the	24
11	[noun] are asked [to-vb] the	23
12	[noun] are invited [to-vb] the	20
13	[noun] are [vb pp] to use the	19
14	[noun] are made [to-vb] the	18
15	[noun] are set [to-vb] the	17
16	[noun] are taken [to-vb] the	17
17	[noun] are advised [to-vb] the	17
18	[noun] are encouraged [to-vb] the	16
19	[noun] are allowed [to-vb] the	14
20	study are [vb pp] [to-vb] the	14
21	studies are [vb pp] [to-vb] the	14
22	people are [vb pp] [to-vb] the	13
23	people are [vb pp] [to-vb] the	13
24	student are [vb pp] [to-vb] the	12
25	students are [vb pp] [to-vb] the	12
26	[noun] are [vb pp] to complete the	11
27	[noun] are [vb pp] to keep the	11
28	[noun] are [vb pp] to join the	11
29	step are [vb pp] [to-vb] the	11
30	[noun] are determined [to-vb] the	11