SN4 ""

No	Pattern	Freq
1	have been [verb] [adv] for [noun pl]	57
2	have been [v-ing] [adv] for [noun]	46
3	have been [vb pp] [adv] for [noun]	37
4	has been [verb] [adv] for [noun]	24
5	have been [verb] [adv] for [noun sg]	24
6	had been [verb] [adv] for [noun]	22
7	have been [verb] [adv] for years	21
8	have been [verb] [adv] for year	21
9	have been [verb] [adv] for [noun]	20
10	have been [verb] there for [noun]	8
11	've been [verb] [adv] for [noun]	8
12	have been [verb] here for [noun]	7
13	have been [verb] [adv] for ages	6
14	have been [verb] specifically for [noun]	6
15	have been [verb] [adv] for age	6
16	have been [verb] so for [noun]	5
17	have been set [adv] for [noun]	5
18	have been doing [adv] for [noun]	5
19	have been designed [adv] for [noun]	5
20	have been [verb] [adv] for month	5
21	have been do [adv] for [noun]	5
22	have been design [adv] for [noun]	5
23	have been [verb] [adv] for months	5
24	have been set [adv] for [noun]	5