SN4 ""

No	Pattern	Freq
1	been [vb pp] for [det] [noun]	287
2	been [vb pp] for [det] [noun sg]	160
3	been [vb pp] for [det] [noun pl]	122
4	been [vb pp] for some [noun]	102
5	been [vb pp] for [det] year	80
6	been [vb pp] for [det] years	77
7	been [vb pp] for [det] time	68
8	been [vb pp] for [det] time	68
9	been [vb pp] for many [noun]	64
10	been [vb pp] for this [noun]	41
11	been known for [det] [noun]	31
12	been used for [det] [noun]	27
13	been [vb pp] for several [noun]	20
14	been [vb pp] for [det] reason	16
15	been [vb pp] for [det] reason	15
16	been [vb pp] for [det] purpose	14
17	been [vb pp] for that [noun]	14
18	been [vb pp] for [det] purpose	13
19	been made for [det] [noun]	9
20	been [vb pp] for [det] week	8
21	been recognised for [det] [noun]	8
22	been established for [det] [noun]	8
23	been [vb pp] for any [noun]	8
24	been [vb pp] for [det] weeks	7
25	been [vb pp] for all [noun]	7
26	been [vb pp] for another [noun]	7
27	been chosen for [det] [noun]	6
28	been [vb pp] for such [noun]	6
29	been [vb pp] for each [noun]	6
30	been [vb pp] for [det] months	5