| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [v-ing] [art] | 717 |
|
| 2 | who [vb past] been [v-ing] | 528 |
|
| 3 | who [vb past] been [art] | 192 |
|
| 4 | who [vb past] [v-ing] [art] | 52 |
|
