SN4 ""

No	Pattern	Freq
1	[pron] [is] [adv] that [det]	53
2	[pers pn] [is] [adv] that [det]	51
3	it [is] [adv] that [det]	50
4	it [is] [adv] that [det]	50
5	[noun] [is] [adv] that [det]	17
6	[noun sg] [is] [adv] that [det]	16
7	[is] [adj] [adv] that [det]	13
8	[is] [adv] [adv] that [det]	13
9	[is] [adj] [adv] that [det]	13
10	[is] [verb] [adv] that [det]	9
11	[is] not [adv] that [det]	8
12	[is] not [adv] that [det]	8
13	[is] [not/n't] [adv] that [det]	8
14	[is] [vb pp] [adv] that [det]	7
15	[is] [adv] [adv] that [det]	5
16	[is] [pron] [adv] that [det]	5
17	[is] [adv] [adj] that [det]	388
18	[is] [adv] [adj] that [det]	385
19	[is] [adv] [verb] that [det]	159
20	[is] [adv] [vb pp] that [det]	139
21	[is] [adv] true that [det]	37
22	[is] [adv] true that [det]	37
23	[is] [adv] clear that [det]	36
24	[is] [adv] clear that [det]	36
25	[is] [adv] possible that [det]	35
26	[is] [adv] possible that [det]	35
27	[is] [adv] likely that [det]	33
28	[is] [adv] likely that [det]	33
29	[is] [adv] unlikely that [det]	31
30	[is] [adv] unlikely that [det]	31