SN4 ""

No	Pattern	Freq
1	have been [vb pp] in [adj] [noun]	663
2	have been [verb] in [adj] [noun pl]	453
3	has been [verb] in [adj] [noun]	255
4	have been [verb] in [adj] [noun]	249
5	have been [verb] in [adj] [noun sg]	232
6	had been [verb] in [adj] [noun]	147
7	have been [verb] in recent [noun]	123
8	have been [verb] in [adj] years	88
9	have been [verb] in [adj] year	88
10	have been [v-ing] in [adj] [noun]	65
11	have been [verb] in other [noun]	55
12	have been [verb] in [adj] [noun prp]	41
13	have been [verb] in [adj] [noun]	39
14	have been used in [adj] [noun]	32
15	have been use in [adj] [noun]	32
16	have been made in [adj] [noun]	31
17	have been make in [adj] [noun]	31
18	have been [verb] in [adj] way	30
19	have been [verb] in [adj] ways	30
20	have been found in [adj] [noun]	28
21	have been find in [adj] [noun]	28
22	have been [verb] in various [noun]	24
23	to have been [verb] in [adj] [noun]	23
24	have been [verb] in previous [noun]	21
25	have been [verb] in [adj] times	19
26	have been [verb] in [adj] time	19
27	have been [verb] in [adj] terms	17
28	have been [verb] in [adj] term	17
29	have been [verb] in [adj] studies	16
30	have been [verb] in [adj] study	16