SN4 ""

No	Pattern	Freq
1	[noun] is for [indef pn]	19
2	[noun sg] is for [indef pn]	18
3	[pron] is for [indef pn]	15
4	it is for [indef pn]	14
5	[pers pn] is for [indef pn]	14
6	it is for [indef pn]	14
7	[adj] is for [indef pn]	6
8	[det] is for [indef pn]	6
9	is [adj] for [indef pn]	90
10	is [adj] for [indef pn]	82
11	is [verb] for [indef pn]	49
12	is [v-ing] for [indef pn]	27
13	is [adv] for [indef pn]	23
14	is [vb pp] for [indef pn]	19
15	is [pron] for [indef pn]	15
16	is not for [indef pn]	12
17	is [indef pn] for [indef pn]	12
18	is [not/n't] for [indef pn]	12
19	is something for [indef pn]	11
20	is something for [indef pn]	11
21	is look for [indef pn]	11
22	is looking for [indef pn]	10
23	is [adv] for [indef pn]	9
24	is not for [indef pn]	9
25	is [noun] for [indef pn]	8
26	is difficult for [indef pn]	8
27	is [noun sg] for [indef pn]	8
28	is important for [indef pn]	8
29	is difficult for [indef pn]	8
30	is important for [indef pn]	8