SN4 ""

No	Pattern	Freq
1	[noun] is [adv] [adv] [to-vb]	210
2	[noun sg] is [adv] [adv] [to-vb]	172
3	[pron] is [adv] [adv] [to-vb]	170
4	[pers pn] is [adv] [adv] [to-vb]	136
5	it is [adv] [adv] [to-vb]	128
6	it is [adv] [adv] [to-vb]	128
7	[adj] is [adv] [adv] [to-vb]	34
8	[det] is [adv] [adv] [to-vb]	30
9	[ex0] is [adv] [adv] [to-vb]	27
10	there is [adv] [adv] [to-vb]	27
11	there is [adv] [adv] [to-vb]	27
12	[noun pl] is [adv] [adv] [to-vb]	26
13	this is [adv] [adv] [to-vb]	20
14	this is [adv] [adv] [to-vb]	20
15	[noun prp] is [adv] [adv] [to-vb]	11
16	purpose is [adv] [adv] [to-vb]	10
17	purpose is [adv] [adv] [to-vb]	10
18	that is [adv] [adv] [to-vb]	9
19	that is [adv] [adv] [to-vb]	9
20	[adv] is [adv] [adv] [to-vb]	7
21	[adv] is [adv] [adv] [to-vb]	7
22	problem is [adv] [adv] [to-vb]	6
23	problem is [adv] [adv] [to-vb]	6
24	job is [adv] [adv] [to-vb]	5
25	task is [adv] [adv] [to-vb]	5
26	job is [adv] [adv] [to-vb]	5
27	task is [adv] [adv] [to-vb]	5
28	is [adv] [adv] [adv] [to-vb]	87
29	is [adv] [adv] [adv] [to-vb]	50
30	is [verb] [adv] [adv] [to-vb]	41