| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] case had to be | 10 |
|
| 2 | [art] case had to be | 10 |
|
| 3 | the case had to be | 8 |
|
| 4 | the case had to be | 8 |
|
| 5 | case had to be [verb] | 15 |
|
| 6 | case had to be [vb pp] | 15 |
|
