| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] [noun] | 193133 |
|
| 2 | [prep] an [noun] [prep] | 19858 |
|
| 3 | an [noun] [prep] [noun] | 19294 |
|
| 4 | [prep] an [noun] [noun] | 9440 |
|
| 5 | [prep] an [prep] [noun] | 30 |
|
