SN4 ""

No	Pattern	Freq
1	an [noun sg] [to-vb] the [noun sg]	1007
2	an attempt [verb] the [noun sg]	392
3	an [noun sg] [v-ing] the [noun sg]	166
4	an effort [verb] the [noun sg]	139
5	an opportunity [verb] the [noun sg]	89
6	an [noun sg] [vb -s] the [noun sg]	87
7	an [noun sg] [vb past] the [noun sg]	43
8	an order [verb] the [noun sg]	33
9	an obligation [verb] the [noun sg]	29
10	an [noun sg] to reduce the [noun sg]	29
11	an [noun sg] reduce the [noun sg]	29
12	an injunction [verb] the [noun sg]	28
13	an agreement [verb] the [noun sg]	26
14	an hour [verb] the [noun sg]	23
15	an [noun sg] [vb base] the [noun sg]	22
16	an [noun sg] improve the [noun sg]	21
17	an [noun sg] to improve the [noun sg]	21
18	an [noun sg] involve the [noun sg]	20
19	an invitation [verb] the [noun sg]	18
20	an [noun sg] prevent the [noun sg]	17
21	an [noun sg] increase the [noun sg]	17
22	an offer [verb] the [noun sg]	17
23	an [noun sg] [vb pp] the [noun sg]	16
24	an [noun sg] see the [noun sg]	16
25	an [noun sg] have the [noun sg]	16
26	an [noun sg] [verb] the problem	16
27	an [noun sg] resolve the [noun sg]	14
28	an option [verb] the [noun sg]	14
29	an [noun sg] bring the [noun sg]	14
30	an [noun sg] assess the [noun sg]	14