SN4 ""

No	Pattern	Freq
1	[conj] this is [adv] an	41
2	[coord] this is [adv] an	16
3	[subord] this is [adv] an	15
4	and this is [adv] an	11
5	and this is [adv] an	11
6	that this is [adv] an	10
7	[that] this is [adv] an	10
8	that this is [adv] an	10
9	although this is [adv] an	7
10	although this is [adv] an	7
11	[noun] this is [adv] an	7
12	but this is [adv] an	5
13	but this is [adv] an	5
14	this [noun sg] is [adv] an	34
15	this [noun] is [adv] an	34
16	this is [adv] [adv] an	32
17	this is not [adv] an	25
18	this is [not/n't] [adv] an	25
19	this is not [adv] an	22
20	this is [adv] [adv] an	7
21	this is [adv] [adv] an	12
22	this is [adv] [adv] an	7
23	this is [adv] [verb] an	5
24	this is [adv] not an	5
25	this is [adv] [not/n't] an	5
26	this is [adv] not an	5
27	this is [adv] an [adj]	74
28	this is [adv] an [adj]	73
29	this is [adv] an [noun]	68
30	this is [adv] an [noun sg]	67