SN4 ""

No	Pattern	Freq
1	[was/were] [vb pp] at a	528
2	was [verb] at a	489
3	were [verb] at a	222
4	[was/were] [v-ing] at a	177
5	[was/were] look at a	34
6	[was/were] looking at a	33
7	[was/were] sit at a	24
8	[was/were] sitting at a	24
9	[was/were] take at a	21
10	[was/were] taken at a	21
11	[was/were] speak at a	16
12	[was/were] made at a	15
13	[was/were] make at a	15
14	[was/were] speaking at a	15
15	[was/were] arrest at a	12
16	[was/were] arrested at a	12
17	[was/were] find at a	11
18	[was/were] found at a	11
19	[was/were] hold at a	10
20	[was/were] seated at a	10
21	[was/were] discussed at a	10
22	[was/were] set at a	10
23	[was/were] run at a	10
24	[was/were] launched at a	10
25	[was/were] seat at a	10
26	[was/were] aim at a	10
27	[was/were] held at a	10
28	[was/were] set at a	10
29	[was/were] launch at a	10
30	[was/were] discuss at a	10