SN4 ""

No	Pattern	Freq
1	[prep] an [noun] [prep] [noun] and	488
2	[prep] an [noun] [prep] [noun] and	488
3	[verb] an [noun] [prep] [noun] and	479
4	be an [noun] [prep] [noun] and	195
5	[be] an [noun] [prep] [noun] and	195
6	[vb past] an [noun] [prep] [noun] and	115
7	[to-vb] an [noun] [prep] [noun] and	91
8	[adv] an [noun] [prep] [noun] and	87
9	[is] an [noun] [prep] [noun] and	79
10	as an [noun] [prep] [noun] and	79
11	as an [noun] [prep] [noun] and	79
12	in an [noun] [prep] [noun] and	73
13	in an [noun] [prep] [noun] and	73
14	is an [noun] [prep] [noun] and	72
15	with an [noun] [prep] [noun] and	72
16	with an [noun] [prep] [noun] and	72
17	[conj] an [noun] [prep] [noun] and	65
18	[v-ing] an [noun] [prep] [noun] and	64
19	[vb -s] an [noun] [prep] [noun] and	63
20	[adv] an [noun] [prep] [noun] and	61
21	[was/were] an [noun] [prep] [noun] and	55
22	[vb base] an [noun] [prep] [noun] and	53
23	was an [noun] [prep] [noun] and	53
24	have an [noun] [prep] [noun] and	52
25	to an [noun] [prep] [noun] and	50
26	to an [noun] [prep] [noun] and	50
27	of an [noun] [prep] [noun] and	48
28	of an [noun] [prep] [noun] and	48
29	[vb pp] an [noun] [prep] [noun] and	47
30	[vb infin] an [noun] [prep] [noun] and	46