SN4 ""

No	Pattern	Freq
1	have been [verb] at the [noun sg]	385
2	have been [vb pp] at the [noun]	359
3	had been [verb] at the [noun]	197
4	have been [v-ing] at the [noun]	100
5	has been [verb] at the [noun]	87
6	have been [verb] at the [noun]	84
7	have been [verb] at the time	47
8	have been [verb] at the [noun prp]	47
9	have been [verb] at the time	47
10	have been [verb] at the [noun]	42
11	have been [verb] at the [noun pl]	27
12	have been looking at the [noun]	25
13	have been look at the [noun]	25
14	to have been [verb] at the [noun]	20
15	have been [verb] at the end	20
16	have been [verb] at the end	19
17	have been [verb] at the expense	17
18	have been [verb] at the expense	17
19	have been make at the [noun]	15
20	have been made at the [noun]	15
21	have been achieve at the [noun]	13
22	have been achieved at the [noun]	13
23	have been working at the [noun]	11
24	have been work at the [noun]	11
25	having been [verb] at the [noun]	11
26	have been placed at the [noun]	10
27	have been place at the [noun]	10
28	have been [verb] at the top	10
29	have been [verb] at the top	10
30	have been found at the [noun]	9