| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] [noun] [prep] [no cls] | 42 |
|
| 2 | at a [adj] [noun sg] [prep] [unc] | 42 |
|
| 3 | at a [adj] [noun] of [unc] | 39 |
|
| 4 | at a [adj] [noun] [prep] [unc] | 21 |
|
| 5 | at an [adj] [noun] [prep] [unc] | 21 |
|
| 6 | at a [adj] rate [prep] [unc] | 15 |
|
| 7 | at a [adj] rate [prep] [unc] | 15 |
|
| 8 | at a [adj] cost [prep] [unc] | 13 |
|
| 9 | at a [adj] cost [prep] [unc] | 13 |
|
| 10 | at a annual [noun] [prep] [unc] | 6 |
|
| 11 | at a additional [noun] [prep] [unc] | 5 |
|
| 12 | at a [adj] [noun] [prep] +½ | 5 |
|
| 13 | at a [adj] [noun] [prep] +½ | 5 |
|
