SN4 ""

No	Pattern	Freq
1	[adj] [noun pl] prevent them	21
2	[adj] [noun pl] prevent them	19
3	the [noun pl] prevent them	11
4	[art] [noun pl] prevent them	11
5	the [noun pl] prevent them	11
6	[art] [noun pl] prevent them	11
7	[noun] [noun pl] prevent them	10
8	[noun sg] [noun pl] prevent them	9
9	[prep] [noun pl] prevent them	7
10	[prep] [noun pl] prevent them	7
11	[noun pl] [conj] prevent them	14
12	[noun pl] which prevent them	7
13	[noun pl] [pron] prevent them	7
14	[noun pl] [coord] prevent them	7
15	[noun pl] which prevent them	7
16	[noun pl] that prevent them	7
17	[noun pl] that prevent them	7
18	[noun pl] [Wh det] prevent them	7
19	[noun pl] [that] prevent them	7
20	[noun pl] and prevent them	6
21	[noun pl] [verb] prevent them	6
22	[noun pl] and prevent them	6
23	[noun pl] prevent them [prep]	29
24	[noun pl] prevent them from	29
25	[noun pl] prevent them [prep]	29
26	[noun pl] prevent them from	29
27	[noun pl] prevent them [v-ing]	23
28	[noun pl] prevent them [verb]	23