| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] had been [v-ing] | 86 |
|
| 2 | which they had been [verb] | 76 |
|
| 3 | [pron] they had been [v-ing] | 29 |
|
| 4 | [Wh det] they had been [v-ing] | 24 |
|
| 5 | which they have been [v-ing] | 20 |
|
| 6 | which they [verb] been [v-ing] | 20 |
|
| 7 | which they [vb past] been [v-ing] | 12 |
|
| 8 | which they had been [v-ing] | 11 |
|
| 9 | which they had be [v-ing] | 11 |
|
| 10 | which they had [be] [v-ing] | 11 |
|
| 11 | which they had [been] [v-ing] | 11 |
|
