SN4 ""

No	Pattern	Freq
1	[noun] [is] that [pers pn]	4252
2	[noun sg] [is] that [pers pn]	3420
3	[verb] [is] that [pers pn]	653
4	[noun pl] [is] that [pers pn]	619
5	[adj] [is] that [pers pn]	515
6	[pron] [is] that [pers pn]	488
7	[pers pn] [is] that [pers pn]	380
8	it [is] that [pers pn]	267
9	it [is] that [pers pn]	267
10	[adj] [is] that [pers pn]	217
11	[det] [is] that [pers pn]	193
12	[noun prp] [is] that [pers pn]	182
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]	118
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]	102
27	point [is] that [pers pn]	98
28	[vb pp] [is] that [pers pn]	96
29	this [is] that [pers pn]	89
30	this [is] that [pers pn]	89