SN4 ""

No	Pattern	Freq
1	[verb] at a [adj] rate	295
2	[verb] at a [adj] rate	295
3	[verb] at a [adj] rate	237
4	[verb] at a [adj] rate	184
5	[verb] at an [adj] rate	111
6	[vb pp] at a [adj] rate	97
7	[v-ing] at a [adj] rate	80
8	[verb] at a [adj -er] rate	58
9	grow at a [adj] rate	42
10	[vb past] at a [adj] rate	33
11	[to-vb] at a [adj] rate	31
12	[verb] at a annual rate	29
13	[verb] at a annual rate	29
14	[verb] at a alarming rate	26
15	[verb] at a alarming rate	26
16	rise at a [adj] rate	22
17	[vb -s] at a [adj] rate	22
18	[verb] at a high rate	21
19	[verb] at a faster rate	21
20	[vb base] at a [adj] rate	21
21	[verb] at a fast rate	21
22	[verb] at a constant rate	20
23	[verb] at a constant rate	20
24	increase at a [adj] rate	18
25	growing at a [adj] rate	17
26	run at a [adj] rate	15
27	[verb] at a higher rate	14
28	expand at a [adj] rate	13
29	[vb infin] at a [adj] rate	11
30	[verb] at a low rate	11