| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] they have been [v-ing] for | 15 |
|
| 2 | [noun] they had been [v-ing] for | 11 |
|
| 3 | [noun] they have been waiting for | 9 |
|
| 4 | [noun] they 've been [v-ing] for | 5 |
|
