| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [modal v] [vb infin] should contact | 11 |
|
| 2 | who [modal v] [vb infin] should contact | 11 |
|
| 3 | who [modal v] [vb infin] should contact | 11 |
|
| 4 | [pron] [modal v] [vb infin] should contact | 11 |
|
| 5 | [modal v] [vb infin] should contact [noun] | 10 |
|
| 6 | [modal v] [vb infin] should contact [noun prp] | 8 |
|
