| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [vb pp] a [noun] | 510 |
|
| 2 | [vb pp] a serious [noun] | 95 |
|
| 3 | [to-vb] a serious [noun] | 83 |
|
| 4 | [to-vb] [vb pp] a serious | 6 |
|
| 5 | [to-vb] [vb pp] serious [noun] | 6 |
|
