SN4 ""

No	Pattern	Freq
1	[verb] as a [noun] [noun] for	229
2	[noun] as a [noun] [noun] for	143
3	[vb pp] as a [noun] [noun] for	129
4	[noun sg] as a [noun] [noun] for	97
5	act as a [noun] [noun] for	49
6	use as a [noun] [noun] for	46
7	used as a [noun] [noun] for	46
8	[adv] as a [noun] [noun] for	32
9	[adj] as a [noun] [noun] for	26
10	[adv] as a [noun] [noun] for	25
11	[noun pl] as a [noun] [noun] for	23
12	serve as a [noun] [noun] for	22
13	work as a [noun] [noun] for	22
14	[v-ing] as a [noun] [noun] for	22
15	[vb infin] as a [noun] [noun] for	22
16	[noun prp] as a [noun] [noun] for	21
17	[vb past] as a [noun] [noun] for	19
18	[to-vb] as a [noun] [noun] for	18
19	[pron] as a [noun] [noun] for	17
20	[pers pn] as a [noun] [noun] for	15
21	[adj] as a [noun] [noun] for	15
22	[vb -s] as a [noun] [noun] for	14
23	[conj] as a [noun] [noun] for	14
24	act as a [noun] [noun] for	13
25	it as a [noun] [noun] for	12
26	it as a [noun] [noun] for	12
27	to act as a [noun] [noun] for	11
28	[coord] as a [noun] [noun] for	10
29	designed as a [noun] [noun] for	9
30	design as a [noun] [noun] for	9