| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] on [art] | 90 |
|
| 2 | had [adv] been [v-ing] [art] | 55 |
|
| 3 | had [adv] been on [art] | 44 |
|
| 4 | [adv] been [v-ing] on [art] | 20 |
|
| 5 | had [adv] been [v-ing] on | 13 |
|
