| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb mod] have been a | 1230 |
|
| 2 | [pron] [vb mod] have been [v-ing] | 647 |
|
| 3 | [pron] have been [v-ing] a | 469 |
|
| 4 | [vb mod] have been [v-ing] a | 52 |
|
