| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] [noun] | 1830 |
|
| 2 | have been an [noun] | 771 |
|
| 3 | have been [v-ing] an | 134 |
|
| 4 | been [v-ing] an [noun] | 78 |
|
