| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | need to know about [noun] | 37 |
|
| 2 | need [to-vb] about [noun sg] | 19 |
|
| 3 | need [to-vb] about [noun pl] | 13 |
|
| 4 | need [to-vb] about [noun prp] | 10 |
|
