SN4 ""

No	Pattern	Freq
1	[noun] as a [noun] for [noun]	342
2	[verb] as a [noun] for [noun]	309
3	[noun sg] as a [noun] for [noun]	242
4	[vb pp] as a [noun] for [noun]	186
5	use as a [noun] for [noun]	69
6	[noun pl] as a [noun] for [noun]	66
7	used as a [noun] for [noun]	63
8	[adv] as a [noun] for [noun]	61
9	[adj] as a [noun] for [noun]	54
10	act as a [noun] for [noun]	50
11	[adv] as a [noun] for [noun]	38
12	[conj] as a [noun] for [noun]	33
13	[coord] as a [noun] for [noun]	29
14	[pron] as a [noun] for [noun]	29
15	[noun prp] as a [noun] for [noun]	27
16	serve as a [noun] for [noun]	27
17	[vb -s] as a [noun] for [noun]	25
18	[v-ing] as a [noun] for [noun]	24
19	[pers pn] as a [noun] for [noun]	23
20	[to-vb] as a [noun] for [noun]	22
21	[adj] as a [noun] for [noun]	21
22	[vb infin] as a [noun] for [noun]	21
23	[vb past] as a [noun] for [noun]	20
24	[num] as a [noun] for [noun]	19
25	[adv prt] as a [noun] for [noun]	18
26	it as a [noun] for [noun]	17
27	it as a [noun] for [noun]	17
28	see as a [noun] for [noun]	17
29	seen as a [noun] for [noun]	16
30	regard as a [noun] for [noun]	15