SN4 ""

No	Pattern	Freq
1	[pers pn] is [adv] that [art]	123
2	[pron] is [adv] that [art]	123
3	it is [adv] that [art]	122
4	it is [adv] that [art]	121
5	[noun] is [adv] that [art]	67
6	[noun sg] is [adv] that [art]	59
7	[adj] is [adv] that [art]	8
8	point is [adv] that [art]	7
9	point is [adv] that [art]	7
10	this is [adv] that [art]	6
11	[verb] is [adv] that [art]	6
12	this is [adv] that [art]	6
13	[det] is [adv] that [art]	6
14	reason is [adv] that [art]	5
15	reason is [adv] that [art]	5
16	problem is [adv] that [art]	5
17	problem is [adv] that [art]	5
18	[noun pl] is [adv] that [art]	5
19	is [adv] [adv] that [art]	79
20	is [verb] [adv] that [art]	63
21	is [vb pp] [adv] that [art]	59
22	is [adj] [adv] that [art]	54
23	is [not/n't] [adv] that [art]	53
24	is not [adv] that [art]	53
25	is [adj] [adv] that [art]	51
26	is not [adv] that [art]	50
27	is [adv] [adv] that [art]	26
28	is only [adv] that [art]	14
29	is only [adv] that [art]	14
30	is clear [adv] that [art]	7