SN4 ""

No	Pattern	Freq
1	at which [pron] [verb]	343
2	at which [pers pn] [verb]	335
3	at which [pron] [vb past]	182
4	at which [pron] [vb base]	111
5	at which they [verb]	109
6	at which they [verb]	109
7	at which he [verb]	70
8	at which he [verb]	70
9	at which [pron] have	63
10	at which it [verb]	52
11	at which it [verb]	52
12	at which [pron] [vb -s]	50
13	at which [pron] had	39
14	at which you [verb]	31
15	at which you [verb]	31
16	at which we [verb]	30
17	at which we [verb]	30
18	at which she [verb]	26
19	at which she [verb]	26
20	at which i [verb]	17
21	at which i [verb]	17
22	at which [pron] have	14
23	at which [pron] has	7
24	at which [pron] take	7
25	at which [pron] wish	6
26	at which [indef pn] [verb]	6
27	at which [pron] excel	6
28	at which one [verb]	5
29	at which [pron] make	5
30	at which [pron] meet	5