| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an [noun sg] [prep] [noun] | 19153 |
|
| 2 | [noun sg] [prep] [noun] [v-ing] | 14327 |
|
| 3 | an [noun sg] [prep] [v-ing] | 1426 |
|
| 4 | an [noun sg] [noun] [v-ing] | 372 |
|
