| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] for [art] | 124 |
|
| 2 | they had been [v-ing] for | 36 |
|
| 3 | they had been [v-ing] [art] | 29 |
|
| 4 | they had been for [art] | 6 |
|
