| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [unc] [was/were] a | 166 |
|
| 2 | 's [be] a | 139 |
|
| 3 | 's [was/were] [art] | 113 |
|
| 4 | ['s] [was/were] a | 70 |
|
| 5 | 's [was/were] a | 66 |
|
