| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [v-ing] [noun] for | 11 |
|
| 2 | they [vb base] been [v-ing] [noun] for | 9 |
|
| 3 | they 've been [v-ing] [noun] for | 6 |
|
| 4 | they [verb] been [v-ing] [noun pl] for | 6 |
|
