| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] had been | 1594 |
|
| 2 | [noun] which had been | 1475 |
|
| 3 | [prep] [noun] which had | 643 |
|
| 4 | [prep] which had been | 132 |
|
