| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [verb] a [noun] [prep] | 673 |
|
| 2 | [been] [v-ing] a [noun] [prep] | 294 |
|
| 3 | [be] doing a [noun] [prep] | 170 |
|
| 4 | [been] doing [art] [noun] [prep] | 38 |
|
| 5 | [been] do a [noun] [prep] | 22 |
|
