SN4 ""

No	Pattern	Freq
1	have been [verb] at [adj]	371
2	have been [vb pp] at [adj]	311
3	have been [verb] at [det]	153
4	have been [verb] at [adj]	115
5	has been [verb] at [adj]	112
6	had been [verb] at [adj]	91
7	have been [verb] at [adj]	86
8	have been [verb] at [num]	82
9	have been [v-ing] at [adj]	59
10	have been [verb] at [adj]	42
11	have been [verb] at all	36
12	have been [verb] at all	36
13	have been [verb] at some	31
14	have been [verb] at some	31
15	have been look at [adj]	30
16	have been looking at [adj]	28
17	have been [verb] at that	18
18	have been [verb] at that	18
19	have been [verb] at this	18
20	have been [verb] at this	18
21	have been [verb] at [num ord]	18
22	have been [verb] at one	16
23	have been [verb] at one	16
24	to have been [verb] at [adj]	14
25	have been [verb] at various	13
26	have been make at [adj]	13
27	have been [verb] at various	13
28	have been made at [adj]	12
29	have been [verb] at any	12
30	have been [verb] at any	12