| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] for many [noun pl] | 5 |
|
| 2 | [vb -s] been [v-ing] for many [noun] | 5 |
|
| 3 | has been [v-ing] for many [noun] | 5 |
|
