SN4 ""

No	Pattern	Freq
1	[noun] [is] that a [noun]	223
2	[noun sg] [is] that a [noun]	202
3	[adj] [is] that a [noun]	46
4	[verb] [is] that a [noun]	44
5	[pron] [is] that a [noun]	37
6	[pers pn] [is] that a [noun]	25
7	it [is] that a [noun]	20
8	it [is] that a [noun]	20
9	[det] [is] that a [noun]	19
10	[noun pl] [is] that a [noun]	18
11	[adj] [is] that a [noun]	16
12	[adv] [is] that a [noun]	15
13	[adv] [is] that a [noun]	15
14	this [is] that a [noun]	14
15	this [is] that a [noun]	14
16	[to-vb] [is] that a [noun]	12
17	here [is] that a [noun]	10
18	[v-ing] [is] that a [noun]	10
19	say [is] that a [noun]	10
20	here [is] that a [noun]	10
21	[num ord] [is] that a [noun]	9
22	[vb -s] [is] that a [noun]	9
23	result [is] that a [noun]	8
24	result [is] that a [noun]	8
25	[vb pp] [is] that a [noun]	8
26	idea [is] that a [noun]	7
27	idea [is] that a [noun]	7
28	saying [is] that a [noun]	7
29	[Wh det] [is] that a [noun]	6
30	which [is] that a [noun]	6