SN4 ""

No	Pattern	Freq
1	have been [verb] [adv prt] at	134
2	have [been] [vb pp] [adv prt] at	100
3	had [been] [verb] [adv prt] at	46
4	have [been] [verb] up at	44
5	has [been] [verb] [adv prt] at	37
6	have [been] [v-ing] [adv prt] at	34
7	have [been] [verb] out at	27
8	have [been] [verb] [adv prt] at	20
9	have [been] set [adv prt] at	18
10	have [been] set [adv prt] at	18
11	have [been] [verb] on at	17
12	have [been] [verb] off at	12
13	have [been] [verb] down at	11
14	have [been] [verb] [adv prt] at	11
15	have [been] go [adv prt] at	9
16	have [been] going [adv prt] at	9
17	have [been] carried [adv prt] at	8
18	have [been] carry [adv prt] at	8
19	have [been] [verb] in at	8
20	's [been] [verb] [adv prt] at	6
21	have [been] break [adv prt] at	5
22	have [been] broken [adv prt] at	5