SN4 ""

No	Pattern	Freq
1	have been [verb] for [noun]	310
2	have been [vb pp] for [noun]	237
3	have been [verb] for [noun sg]	159
4	have been [verb] for [noun pl]	119
5	have been [v-ing] for [noun]	73
6	have been [verb] for years	35
7	have been [verb] for year	35
8	have been [verb] for [noun prp]	28
9	have been use for [noun]	23
10	have been used for [noun]	22
11	have been make for [noun]	12
12	have been select for [noun]	11
13	have been made for [noun]	11
14	have been selected for [noun]	11
15	have been [verb] for centuries	10
16	have been [verb] for century	10
17	have been developed for [noun]	9
18	have been develop for [noun]	9
19	have been report for [noun]	7
20	have been do for [noun]	7
21	have been look for [noun]	6
22	have been wait for [noun]	6
23	have been waiting for [noun]	6
24	have been doing for [noun]	6
25	have been looking for [noun]	6
26	have been [verb] for months	5
27	have been accepted for [noun]	5
28	have been reported for [noun]	5
29	have been try for [noun]	5
30	have been design for [noun]	5