| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] [prep] an increase | 28 |
|
| 2 | was [vb pp] [prep] a increase | 23 |
|
| 3 | [was/were] [vb pp] by a increase | 14 |
|
| 4 | [was/were] [vb pp] with a increase | 7 |
|
| 5 | were [vb pp] [prep] a increase | 5 |
|
