| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they had [adv] been [v-ing] | 37 |
|
| 2 | they had [adv] been [v-ing] | 28 |
|
| 3 | they had [not/n't] been [v-ing] | 12 |
|
| 4 | they had not been [v-ing] | 12 |
|
| 5 | they had not been [v-ing] | 9 |
|
| 6 | they had all been [v-ing] | 9 |
|
| 7 | they had all been [v-ing] | 9 |
|
