SN4 ""

No	Pattern	Freq
1	have been [adj] for [noun]	197
2	have [been] [adj] for [noun pl]	86
3	had [been] [adj] for [noun]	63
4	have [been] [adj] for [noun sg]	55
5	have [been] [adj] for [noun prp]	53
6	have [been] [adj] for [noun]	49
7	has [been] [adj] for [noun]	41
8	have [been] [adj] for years	25
9	have [been] [adj] for year	25
10	have [been] [adj] for [noun]	23
11	have [been] responsible for [noun]	18
12	have [been] good for [noun]	12
13	have [been] dead for [noun]	10
14	's [been] [adj] for [noun]	10
15	have [been] available for [noun]	8
16	have [been] [adj] for centuries	8
17	have [been] necessary for [noun]	8
18	have [been] [adj] for century	8
19	have [been] [adj] for month	7
20	have [been] [adj] for months	7
21	have [been] [adj] for hours	7
22	have [been] [adj] for hour	7
23	have [been] possible for [noun]	6
24	to have [been] [adj] for [noun]	5
25	have [been] easy for [noun]	5
26	have [been] [adj] for britain	5
27	have [been] [adj] for britain	5