| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] on [noun] | 20 |
|
| 2 | has been [v-ing] on [noun sg] | 8 |
|
| 3 | has been working on [noun] | 7 |
|
| 4 | has been [v-ing] on [noun prp] | 6 |
|
| 5 | has been [v-ing] on [noun pl] | 6 |
|
