| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for a | 72 |
|
| 2 | had be [v-ing] for a | 60 |
|
| 3 | had be [v-ing] for an | 12 |
|
| 4 | had be looking for a | 8 |
|
| 5 | had be hoping for a | 7 |
|
