| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a [noun] | 4420 |
|
| 2 | [vb pp] at a [noun] | 1608 |
|
| 3 | signed [prep] a [noun] | 66 |
|
| 4 | signed at [art] [noun] | 26 |
|
| 5 | sign at a [noun] | 5 |
|
