SN4 ""

No	Pattern	Freq
1	[noun] is that [pers pn]	4224
2	[noun sg] is that [pers pn]	3408
3	[verb] is that [pers pn]	651
4	[noun pl] is that [pers pn]	618
5	[adj] is that [pers pn]	512
6	[pron] is that [pers pn]	442
7	[pers pn] is that [pers pn]	339
8	it is that [pers pn]	226
9	it is that [pers pn]	226
10	[adj] is that [pers pn]	217
11	[det] is that [pers pn]	190
12	[noun prp] is that [pers pn]	168
13	[adv] is that [pers pn]	165
14	thing is that [pers pn]	163
15	thing is that [pers pn]	156
16	[vb infin] is that [pers pn]	148
17	problem is that [pers pn]	143
18	[adv] is that [pers pn]	139
19	say is that [pers pn]	135
20	problem is that [pers pn]	130
21	[vb base] is that [pers pn]	116
22	[v-ing] is that [pers pn]	112
23	[to-vb] is that [pers pn]	109
24	answer is that [pers pn]	108
25	answer is that [pers pn]	107
26	point is that [pers pn]	101
27	point is that [pers pn]	97
28	[vb pp] is that [pers pn]	96
29	this is that [pers pn]	89
30	this is that [pers pn]	89