| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have been a [noun] | 2747 |
|
| 2 | [pron] have been [v-ing] [noun] | 848 |
|
| 3 | have been [v-ing] a [noun] | 509 |
|
| 4 | [pron] have been [v-ing] a | 469 |
|
