SN4 ""

No	Pattern	Freq
1	have been [v-ing] for some	81
2	had been [v-ing] for [det]	78
3	has been [v-ing] for [det]	37
4	have been [v-ing] for [det]	32
5	have been [v-ing] for this	28
6	've been [v-ing] for [det]	26
7	have been waiting for [det]	26
8	have been [v-ing] for several	24
9	have been [v-ing] for many	17
10	have been [v-ing] for more	12
11	have been running for [det]	11
12	have been looking for [det]	11
13	have been [v-ing] for all	11
14	have been [v-ing] for [det]	10
15	'd been [v-ing] for [det]	10
16	have been [v-ing] for that	10
17	have been asking for [det]	6
18	's been [v-ing] for [det]	5
19	have been saying for [det]	5
20	have been working for [det]	5
21	have been trying for [det]	5