SN4 ""

No	Pattern	Freq
1	[was/were] [v-ing] at [art] [noun]	783
2	[was/were] [v-ing] at [art] [noun sg]	664
3	[was/were] [v-ing] at the [noun]	658
4	[was/were] [v-ing] at the [noun]	658
5	was [v-ing] at [art] [noun]	613
6	were [v-ing] at [art] [noun]	170
7	[was/were] looking at [art] [noun]	128
8	[was/were] [v-ing] at a [noun]	125
9	[was/were] [v-ing] at a [noun]	116
10	[was/were] standing at [art] [noun]	86
11	[was/were] [v-ing] at [art] [noun pl]	75
12	[was/were] sitting at [art] [noun]	73
13	[was/were] [v-ing] at [art] time	72
14	[was/were] [v-ing] at [art] time	71
15	[was/were] staring at [art] [noun]	52
16	[was/were] [v-ing] at [art] table	38
17	[was/were] [v-ing] at [art] table	38
18	[was/were] [v-ing] at [art] [noun prp]	37
19	[was/were] working at [art] [noun]	34
20	[was/were] [v-ing] at [art] door	32
21	[was/were] [v-ing] at [art] door	32
22	[was/were] waiting at [art] [noun]	29
23	[was/were] speaking at [art] [noun]	27
24	[was/were] staying at [art] [noun]	22
25	[was/were] [v-ing] at [art] back	17
26	[was/were] [v-ing] at [art] back	17
27	[was/were] [v-ing] at [art] window	16
28	[was/were] [v-ing] at [art] end	16
29	[was/were] [v-ing] at [art] end	16
30	[was/were] [v-ing] at [art] top	15