| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [v-ing] for some [noun pl] | 12 |
|
| 2 | [vb past] been [v-ing] [prep] some [noun pl] | 12 |
|
| 3 | had been [v-ing] [prep] some [noun pl] | 12 |
|
| 4 | [vb past] been [v-ing] [prep] some years | 7 |
|
