| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that have been [verb] through | 12 |
|
| 2 | that have been [vb pp] through | 7 |
|
| 3 | that had been [verb] through | 5 |
|
| 4 | that have been [v-ing] through | 5 |
|
