SN4 ""

No	Pattern	Freq
1	been [verb] at the [noun sg]	448
2	been [vb pp] at the [noun]	422
3	been [v-ing] at the [noun]	113
4	been [verb] at the time	64
5	been [verb] at the time	64
6	been [verb] at the [noun prp]	52
7	been [verb] at the [noun pl]	35
8	been looking at the [noun]	31
9	been look at the [noun]	31
10	been [verb] at the end	25
11	been [verb] at the end	24
12	been [verb] at the expense	19
13	been [verb] at the expense	19
14	been achieve at the [noun]	16
15	been achieved at the [noun]	16
16	been make at the [noun]	15
17	been made at the [noun]	15
18	been place at the [noun]	11
19	been found at the [noun]	11
20	been work at the [noun]	11
21	been placed at the [noun]	11
22	been find at the [noun]	11
23	been working at the [noun]	11
24	been [verb] at the top	10
25	been [verb] at the beginning	10
26	been [verb] at the beginning	10
27	been [verb] at the top	10
28	been [verb] at the level	9
29	been [verb] at the level	9
30	been [verb] at the request	8