SN4 ""

No	Pattern	Freq
1	be [v-ing] at the [adj] [noun sg]	169
2	was [v-ing] at the [adj] [noun]	73
3	be looking at the [adj] [noun]	63
4	be [v-ing] at the [adj] [noun]	23
5	be [v-ing] at the [adj] [noun pl]	22
6	been [v-ing] at the [adj] [noun]	20
7	were [v-ing] at the [adj] [noun]	18
8	are [v-ing] at the [adj] [noun]	17
9	be standing at the [adj] [noun]	16
10	're [v-ing] at the [adj] [noun]	15
11	is [v-ing] at the [adj] [noun]	15
12	be [v-ing] at the [adj] end	14
13	be [v-ing] at the [adj] end	14
14	be [v-ing] at the other [noun]	10
15	be working at the [adj] [noun]	10
16	's [v-ing] at the [adj] [noun]	8
17	be [v-ing] at the far [noun]	8
18	be [v-ing] at the [adj] level	7
19	be [v-ing] at the [adj] door	7
20	be [v-ing] at the [adj] level	7
21	be staring at the [adj] [noun]	7
22	be [v-ing] at the [adj] door	7
23	be [v-ing] at the [adj] time	7
24	'm [v-ing] at the [adj] [noun]	7
25	be [v-ing] at the old [noun]	7
26	be [v-ing] at the [adj] time	7
27	be [v-ing] at the right [noun]	6
28	be [v-ing] at the present [noun]	6
29	be [v-ing] at the front [noun]	6
30	be [v-ing] at the big [noun]	5