SN4 ""

No	Pattern	Freq
1	is [noun] for [art]	242
2	is [noun] for [art]	242
3	is [noun] for [noun]	241
4	is [noun] for [adj]	154
5	is [noun] for the	152
6	is [noun] for [noun sg]	152
7	is [noun] for the	152
8	is [noun] for a	87
9	is [noun] for a	79
10	is [noun] for [det]	62
11	is [noun] for [pron]	60
12	is [noun] for [adj]	60
13	is [noun] for [noun pl]	51
14	is [noun] for [pers pn]	33
15	is [noun] for [adv]	28
16	is [noun] for [adv]	27
17	is [noun] for [verb]	26
18	is [noun] for [v-ing]	26
19	is [noun] for [noun prp]	26
20	is [noun] for [num]	23
21	is [noun] for [pos pn]	18
22	is [noun] for improvement	17
23	is [noun] for improvement	16
24	is [noun] for [n mass]	12
25	is [noun] for some	10
26	is [noun] for this	10
27	is [noun] for this	10
28	is [noun] for some	10
29	is [noun] for [adj -er]	9
30	is [noun] for them	8