| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be an [noun] | 1072 |
|
| 2 | [prep] an [noun] but | 142 |
|
| 3 | be an [noun] but | 52 |
|
| 4 | [prep] be [noun] but | 29 |
|
