SN4 ""

No	Pattern	Freq
1	[noun] [is] that it [adv]	49
2	[noun sg] [is] that it [adv]	39
3	[adj] [is] that it [adv]	6
4	[noun pl] [is] that it [adv]	5
5	[noun prp] [is] that it [adv]	5
6	[is] that it [be] [adv]	216
7	[is] that it be [adv]	216
8	[is] that it [is] [adv]	205
9	[is] that it is [adv]	167
10	[is] that it [verb] [adv]	77
11	[is] that it [vb -s] [adv]	71
12	[is] that it 's [adv]	38
13	[is] that it [vb mod] [adv]	32
14	[is] that it [modal v] [adv]	32
15	[is] that it have [adv]	13
16	[is] that it was [adv]	11
17	[is] that it can [adv]	11
18	[is] that it [was/were] [adv]	11
19	[is] that it can [adv]	11
20	[is] that it has [adv]	10
21	[is] that it [adv] [adv]	10
22	[is] that it [adv] [adv]	7
23	[is] that it would [adv]	7
24	[is] that it would [adv]	7
25	[is] that it will [adv]	6
26	[is] that it will [adv]	6
27	[is] that it [vb past] [adv]	5
28	[is] that it [adv] [verb]	53
29	[is] that it [adv] [vb -s]	47
30	[is] that it [adv] [adv]	8