SN4 ""

No	Pattern	Freq
1	[noun] is [adv] concerned	322
2	[noun sg] is [adv] concerned	257
3	[pron] is [adv] concerned	131
4	[pers pn] is [adv] concerned	89
5	[noun prp] is [adv] concerned	52
6	it is [adv] concerned	50
7	it is [adv] concerned	50
8	he is [adv] concerned	31
9	he is [adv] concerned	31
10	[conj] is [adv] concerned	25
11	which is [adv] concerned	25
12	which is [adv] concerned	25
13	[Wh det] is [adv] concerned	25
14	[coord] is [adv] concerned	21
15	[adj] is [adv] concerned	15
16	book is [adv] concerned	14
17	book is [adv] concerned	14
18	and is [adv] concerned	12
19	and is [adv] concerned	12
20	[noun pl] is [adv] concerned	11
21	[indef pn] is [adv] concerned	10
22	[det] is [adv] concerned	9
23	government is [adv] concerned	8
24	government is [adv] concerned	8
25	but is [adv] concerned	8
26	she is [adv] concerned	8
27	she is [adv] concerned	8
28	but is [adv] concerned	8
29	who is [adv] concerned	7
30	[Wh pn] is [adv] concerned	7