| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] [art] [noun] [noun] | 5136 |
|
| 2 | be [prep] [art] [noun] [noun] | 5136 |
|
| 3 | be [prep] a [noun] [noun] | 1322 |
|
| 4 | [be] [prep] an [noun] [noun] | 138 |
|
| 5 | be [prep] an [noun] [noun] | 138 |
|
