| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for some | 40 |
|
| 2 | had been [v-ing] for several | 10 |
|
| 3 | had been waiting for [det] | 8 |
|
| 4 | had been [v-ing] for many | 8 |
|
| 5 | had been [v-ing] for this | 6 |
|
| 6 | had been [v-ing] for all | 5 |
|
