| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] on [art] | 90 |
|
| 2 | had been [v-ing] on the | 73 |
|
| 3 | had been working on [art] | 21 |
|
| 4 | had been [v-ing] on a | 14 |
|
| 5 | had been sitting on [art] | 12 |
|
| 6 | had been standing on [art] | 5 |
|
