| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] [to-vb] | 28774 |
|
| 2 | [verb] [to-vb] an | 4960 |
|
| 3 | [was/were] [verb] an | 1265 |
|
| 4 | [was/were] [to-vb] an | 240 |
|
