| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [v-ing] for some time | 22 |
|
| 2 | [vb past] been [v-ing] [prep] some time | 22 |
|
| 3 | had been [v-ing] [prep] some time | 22 |
|
| 4 | [vb past] been [v-ing] for some time | 22 |
|
