| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [verb] for | 63 |
|
| 2 | had been [v-ing] [verb] [prep] | 50 |
|
| 3 | [verb] been [v-ing] [verb] for | 37 |
|
| 4 | have been [v-ing] [verb] for | 37 |
|
| 5 | had be [v-ing] [verb] for | 15 |
|
| 6 | had [be] [v-ing] [verb] for | 15 |
|
| 7 | had [been] [v-ing] [verb] for | 15 |
|
| 8 | [vb past] been [v-ing] [verb] for | 15 |
|
