SN4 ""

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