| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [prep] a [noun] | 1719 |
|
| 2 | [prep] [prep] a [noun] | 1716 |
|
| 3 | for [prep] [art] [noun] | 951 |
|
| 4 | for [prep] a [noun] | 348 |
|
