SN4 ""

No	Pattern	Freq
1	at the [noun sg] [subord] [pers pn]	446
2	at the [noun sg] [subord] he	97
3	at the [noun sg] when [pers pn]	95
4	at the [noun sg] as [pers pn]	92
5	at the [noun sg] [subord] it	88
6	at the [noun sg] because [pers pn]	83
7	at the [noun sg] [subord] i	64
8	at the moment [subord] [pers pn]	57
9	at the [noun sg] [subord] you	56
10	at the [noun sg] [subord] they	56
11	at the [noun sg] [subord] she	52
12	at the [noun sg] if [pers pn]	38
13	at the [noun sg] [subord] we	33
14	at the [noun sg] so [pers pn]	30
15	at the end [subord] [pers pn]	25
16	at the time [subord] [pers pn]	20
17	at the [noun sg] while [pers pn]	18
18	at the [noun sg] until [pers pn]	18
19	at the [noun sg] before [pers pn]	16
20	at the point [subord] [pers pn]	15
21	at the [noun sg] since [pers pn]	13
22	at the [noun sg] cos [pers pn]	13
23	at the beginning [subord] [pers pn]	12
24	at the door [subord] [pers pn]	11
25	at the top [subord] [pers pn]	7
26	at the hospital [subord] [pers pn]	7
27	at the [noun sg] than [pers pn]	7
28	at the party [subord] [pers pn]	6
29	at the back [subord] [pers pn]	6
30	at the table [subord] [pers pn]	6