SN4 ""

No	Pattern	Freq
1	[noun] is that [pron] [verb]	1950
2	[noun sg] is that [pron] [verb]	1572
3	[noun pl] is that [pron] [verb]	294
4	[verb] is that [pron] [verb]	291
5	[adj] is that [pron] [verb]	233
6	[pron] is that [pron] [verb]	198
7	[pers pn] is that [pron] [verb]	157
8	it is that [pron] [verb]	107
9	it is that [pron] [verb]	107
10	[det] is that [pron] [verb]	96
11	[adj] is that [pron] [verb]	89
12	[adv] is that [pron] [verb]	84
13	thing is that [pron] [verb]	80
14	thing is that [pron] [verb]	78
15	[noun prp] is that [pron] [verb]	69
16	[vb infin] is that [pron] [verb]	66
17	[adv] is that [pron] [verb]	64
18	say is that [pron] [verb]	62
19	problem is that [pron] [verb]	58
20	[vb base] is that [pron] [verb]	57
21	problem is that [pron] [verb]	52
22	[v-ing] is that [pron] [verb]	46
23	[to-vb] is that [pron] [verb]	44
24	this is that [pron] [verb]	39
25	this is that [pron] [verb]	39
26	[vb pp] is that [pron] [verb]	37
27	that is that [pron] [verb]	37
28	[vb -s] is that [pron] [verb]	37
29	that is that [pron] [verb]	37
30	point is that [pron] [verb]	36