SN4 ""

No	Pattern	Freq
1	[noun] is the	24129
2	[noun sg] [is] the	18090
3	[noun prp] [is] the	3446
4	[noun pl] [is] the	2136
5	[letter] [is] the	738
6	[noun] 's the	523
7	example [is] the	283
8	example [is] the	276
9	[n mass] [is] the	242
10	problem [is] the	177
11	problem [is] the	157
12	system [is] the	117
13	point [is] the	106
14	system [is] the	101
15	feature [is] the	99
16	point [is] the	96
17	thing [is] the	91
18	feature [is] the	90
19	year [is] the	89
20	book [is] the	86
21	issue [is] the	86
22	interest [is] the	85
23	issue [is] the	85
24	other [is] the	84
25	time [is] the	84
26	work [is] the	83
27	work [is] the	83
28	factor [is] the	80
29	interest [is] the	80
30	thing [is] the	78