| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] a [noun] | 20047 |
|
| 2 | it [modal v] [vb infin] [noun] | 2429 |
|
| 3 | it [modal v] [vb infin] a | 2003 |
|
| 4 | it [vb infin] a [noun] | 117 |
|
