SN4 ""

No	Pattern	Freq
1	[pron] is [pron] [to-vb]	343
2	[ex0] is [pron] [to-vb]	255
3	there is [pron] [to-vb]	255
4	there is [pron] [to-vb]	255
5	[noun] is [pron] [to-vb]	163
6	[noun sg] is [pron] [to-vb]	134
7	[adj] is [pron] [to-vb]	82
8	[Wh det] is [pron] [to-vb]	58
9	what is [pron] [to-vb]	52
10	what is [pron] [to-vb]	52
11	[det] is [pron] [to-vb]	47
12	[adv] is [pron] [to-vb]	47
13	[adv] is [pron] [to-vb]	37
14	[adj] is [pron] [to-vb]	33
15	[pers pn] is [pron] [to-vb]	29
16	it is [pron] [to-vb]	27
17	it is [pron] [to-vb]	27
18	[conj] is [pron] [to-vb]	26
19	this is [pron] [to-vb]	26
20	this is [pron] [to-vb]	26
21	[coord] is [pron] [to-vb]	24
22	else is [pron] [to-vb]	19
23	[verb] is [pron] [to-vb]	19
24	else is [pron] [to-vb]	19
25	[noun prp] is [pron] [to-vb]	16
26	[noun pl] is [pron] [to-vb]	12
27	or is [pron] [to-vb]	11
28	easy is [pron] [to-vb]	11
29	easy is [pron] [to-vb]	11
30	experience is [pron] [to-vb]	11