| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had [been] [v-ing] for some | 18 |
|
| 2 | [noun] [vb past] been [v-ing] for some | 18 |
|
| 3 | [noun sg] [vb past] [been] [v-ing] for some | 11 |
|
