SN4 ""

No	Pattern	Freq
1	have [been] [vb pp] for [det] [noun]	250
2	have been [vb pp] for [det] [noun]	250
3	have [been] [vb pp] for [det] [noun sg]	136
4	have [been] [vb pp] for [det] [noun pl]	110
5	has [been] [vb pp] for [det] [noun]	90
6	have [been] [vb pp] for some [noun]	90
7	have [been] [vb pp] for [det] year	73
8	had [been] [vb pp] for [det] [noun]	72
9	have [been] [vb pp] for [det] years	70
10	have [been] [vb pp] for [det] [noun]	67
11	have [been] [vb pp] for many [noun]	60
12	have [been] [vb pp] for [det] time	59
13	have [been] [vb pp] for [det] time	59
14	have [been] [vb pp] for this [noun]	38
15	have [been] known for [det] [noun]	31
16	have [been] used for [det] [noun]	21
17	have [been] [vb pp] for several [noun]	17
18	have [been] [vb pp] for [det] reason	15
19	have [been] [vb pp] for [det] reason	14
20	have [been] [vb pp] for [det] purpose	10
21	have [been] made for [det] [noun]	9
22	have [been] [vb pp] for [det] purpose	9
23	have [been] [vb pp] for [det] [noun]	8
24	have [been] established for [det] [noun]	8
25	have [been] recognised for [det] [noun]	8
26	have [been] [vb pp] for that [noun]	7
27	have [been] [vb pp] for [det] week	7
28	have [been] [vb pp] for [det] weeks	6
29	have [been] [vb pp] for another [noun]	6
30	have [been] [vb pp] for any [noun]	6