| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] in [art] | 122 |
|
| 2 | they had been in [art] | 53 |
|
| 3 | they had been [v-ing] [art] | 29 |
|
| 4 | they had been [v-ing] in | 21 |
|
