| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be a erm | 38 |
|
| 2 | [be] a erm | 38 |
|
| 3 | [is] a erm | 23 |
|
| 4 | is a erm | 12 |
|
| 5 | 's a erm | 11 |
|
| 6 | was a erm | 11 |
|
| 7 | [was/were] a erm | 11 |
|
