| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [vb pp] a [noun] | 1263 |
|
| 2 | [vb mod] [verb] [vb pp] [art] problem | 20 |
|
| 3 | [vb mod] [verb] [vb pp] [art] problem | 20 |
|
| 4 | [vb mod] [verb] [verb] a problem | 9 |
|
| 5 | [modal v] [verb] [vb pp] a problem | 7 |
|
| 6 | [vb mod] [verb] [vb pp] a problem | 7 |
|
