SN4 ""

No	Pattern	Freq
1	have been [v-ing] for [det] [noun]	143
2	have [been] [v-ing] for [det] [noun sg]	83
3	have [been] [v-ing] for some [noun]	76
4	had [been] [v-ing] for [det] [noun]	64
5	have [been] [v-ing] for [det] [noun pl]	60
6	have [been] [v-ing] for [det] time	55
7	have [been] [v-ing] for [det] time	55
8	have [been] [v-ing] for [det] year	36
9	have [been] [v-ing] for [det] years	36
10	has [been] [v-ing] for [det] [noun]	28
11	have [been] [v-ing] for [det] [noun]	24
12	have [been] [v-ing] for several [noun]	24
13	have [been] [v-ing] for this [noun]	19
14	have [been] [v-ing] for many [noun]	17
15	have [been] waiting for [det] [noun]	16
16	've [been] [v-ing] for [det] [noun]	14
17	have [been] running for [det] [noun]	11
18	have [been] [v-ing] for [det] moment	7
19	have [been] [v-ing] for [det] moment	7
20	have [been] [v-ing] for [det] months	6
21	have [been] [v-ing] for [det] [noun]	6
22	have [been] [v-ing] for [det] month	6
23	have [been] [v-ing] for [det] minute	6
24	have [been] [v-ing] for [det] minutes	6
25	have [been] trying for [det] [noun]	5
26	have [been] saying for [det] [noun]	5