SN4 ""

No	Pattern	Freq
1	have [adv] been [vb pp] for [det]	53
2	have [adv] been [verb] for [det]	34
3	have not been [verb] for [det]	32
4	have [not/n't] been [verb] for [det]	32
5	have not been [verb] for [det]	27
6	has [adv] been [verb] for [det]	23
7	had [adv] been [verb] for [det]	22
8	have [adv] been [verb] for some	19
9	have [adv] been [verb] for [det]	15
10	have [adv] been [v-ing] for [det]	13
11	have [adv] been [verb] for that	10
12	have already been [verb] for [det]	10
13	have already been [verb] for [det]	10
14	have [adv] been use for [det]	9
15	have [adv] been used for [det]	8
16	have [adv] been [verb] for many	7
17	have [adv] been [verb] for several	7
18	have never been [verb] for [det]	5
19	have [adv] been [verb] for this	5
20	have never been [verb] for [det]	5
21	have n't been [verb] for [det]	5
22	have [adv] been [verb] for all	5