| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] a fourth | 19 |
|
| 2 | [be] [vb pp] by a fourth | 8 |
|
| 3 | [be] [vb pp] for a fourth | 8 |
|
| 4 | [was/were] [vb pp] [prep] a fourth | 7 |
|
| 5 | been [vb pp] [prep] a fourth | 5 |
|
| 6 | [been] [vb pp] [prep] a fourth | 5 |
|
| 7 | were [vb pp] [prep] a fourth | 5 |
|
