| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] [prep] an [noun] | 1276 |
|
| 2 | [was/were] [vb pp] [prep] an [noun sg] | 1195 |
|
| 3 | [be] [vb pp] [prep] an increase | 94 |
|
| 4 | [was/were] [vb pp] [prep] [art] increase | 34 |
|
| 5 | [was/were] [vb pp] [prep] [art] increase | 34 |
|
| 6 | [was/were] [verb] [prep] an increase | 30 |
|
| 7 | [was/were] [vb pp] [prep] an increase | 28 |
|
| 8 | [was/were] [vb pp] [prep] a increase | 28 |
|
| 9 | [was/were] [vb pp] [prep] an increase | 28 |
|
