| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] been [v-ing] for [det] | 8 |
|
| 2 | [modal v] [vb infin] been [v-ing] for [det] | 8 |
|
| 3 | [vb infin] been [v-ing] for [det] [noun] | 6 |
|
