SN4 ""

No	Pattern	Freq
1	[subord] at present	166
2	as at [noun sg]	136
3	than at [noun sg]	133
4	[subord] at home	91
5	while at [noun sg]	48
6	when at [noun sg]	45
7	whether at [noun sg]	33
8	[subord] at school	20
9	because at [noun sg]	19
10	[subord] at work	19
11	although at [noun sg]	17
12	[subord] at night	15
13	[subord] at point	11
14	whilst at [noun sg]	11
15	whereas at [noun sg]	11
16	[subord] at university	10
17	except at [noun sg]	10
18	[subord] at rest	10
19	if at [noun sg]	9
20	though at [noun sg]	9
21	where at [noun sg]	8
22	[subord] at length	7
23	[subord] at christmas	7
24	[subord] at sea	5
25	until at [noun sg]	5