| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is a case | 291 |
|
| 2 | was a case | 211 |
|
| 3 | be a case | 126 |
|
| 4 | 's a case | 98 |
|
| 5 | been a case | 26 |
|
| 6 | are a case | 12 |
|
| 7 | being a case | 7 |
|
