SN4 ""

No	Pattern	Freq
1	[noun sg] is [adv] that	311
2	[noun] is [adv] that	243
3	[noun] is not that	108
4	[noun] is [not/n't] that	108
5	[noun] is not that	106
6	[noun] is simply that	47
7	[noun] is simply that	47
8	point is [adv] that	31
9	point is [adv] that	31
10	[noun pl] is [adv] that	30
11	problem is [adv] that	20
12	problem is [adv] that	20
13	[noun] is so that	16
14	[noun] is so that	16
15	[noun] is there that	14
16	[noun] is there that	14
17	[noun prp] is [adv] that	14
18	[noun] is precisely that	13
19	[noun] is precisely that	13
20	reason is [adv] that	11
21	reason is [adv] that	11
22	[noun] is perhaps that	10
23	answer is [adv] that	10
24	answer is [adv] that	10
25	[noun] is perhaps that	10
26	[noun] is probably that	9
27	[noun] is probably that	9
28	[noun] is merely that	8
29	[noun] is therefore that	8
30	[noun] is therefore that	8