SN4 ""

No	Pattern	Freq
1	have been [adj] for [noun]	197
2	have been [adj] for [noun pl]	91
3	had been [adj] for [noun]	63
4	have been [adj] for [noun]	60
5	have been [adj] for [noun prp]	58
6	have been [adj] for [noun sg]	58
7	has been [adj] for [noun]	42
8	have been [adj] for years	25
9	have been [adj] for year	25
10	have been [adj] for [noun]	23
11	have been good for [noun]	18
12	have been responsible for [noun]	18
13	have been responsible for [noun]	18
14	have been good for [noun]	12
15	have been [adj -er] for [noun]	11
16	have been dead for [noun]	10
17	have been dead for [noun]	10
18	's been [adj] for [noun]	10
19	have been necessary for [noun]	8
20	have been available for [noun]	8
21	have been [adj] for centuries	8
22	have been necessary for [noun]	8
23	have been available for [noun]	8
24	have been [adj] for century	8
25	have been [adj] for month	7
26	have been [adj] for hours	7
27	have been [adj] for months	7
28	have been [adj] for hour	7
29	have been [adj] for britain	6
30	have been possible for [noun]	6