| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [verb] for some | 73 |
|
| 2 | had been [verb] for some | 71 |
|
| 3 | [vb past] been [v-ing] for some | 42 |
|
| 4 | [vb past] been [vb pp] for some | 31 |
|
