| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [art] [noun] [noun] [v-ing] | 468 |
|
| 2 | [be] [art] [noun] [noun] [v-ing] | 468 |
|
| 3 | [be] a [noun] [noun] [v-ing] | 321 |
|
| 4 | [be] an [noun] [noun] [verb] | 165 |
|
