| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] a [noun] | 439 |
|
| 2 | have been [v-ing] for [noun] | 270 |
|
| 3 | have been [v-ing] for a | 184 |
|
| 4 | been [v-ing] for a [noun] | 116 |
|
| 5 | have been for a [noun] | 26 |
|
