SN4 ""

No	Pattern	Freq
1	[noun] is [adv] an [noun]	498
2	[pron] is [adv] an [noun]	486
3	[noun sg] is [adv] an [noun]	394
4	[pers pn] is [adv] an [noun]	223
5	it is [adv] an [noun]	200
6	it is [adv] an [noun]	200
7	[ex0] is [adv] an [noun]	198
8	there is [adv] an [noun]	198
9	there is [adv] an [noun]	198
10	[adj] is [adv] an [noun]	193
11	[det] is [adv] an [noun]	182
12	this is [adv] an [noun]	151
13	this is [adv] an [noun]	151
14	[noun prp] is [adv] an [noun]	58
15	[noun pl] is [adv] an [noun]	39
16	[Wh det] is [adv] an [noun]	38
17	which is [adv] an [noun]	33
18	which is [adv] an [noun]	33
19	[conj] is [adv] an [noun]	29
20	that is [adv] an [noun]	27
21	that is [adv] an [noun]	27
22	[coord] is [adv] an [noun]	23
23	[verb] is [adv] an [noun]	20
24	[Wh pn] is [adv] an [noun]	18
25	who is [adv] an [noun]	18
26	who is [adv] an [noun]	18
27	and is [adv] an [noun]	18
28	and is [adv] an [noun]	18
29	he is [adv] an [noun]	16
30	he is [adv] an [noun]	16