SN4 ""

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