| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] a [noun] [prep] | 18048 |
|
| 2 | been a [noun] [prep] | 3213 |
|
| 3 | [v-ing] been a [noun] | 54 |
|
| 4 | [v-ing] been [noun] [prep] | 21 |
|
