| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] this [noun] | 1935 |
|
| 2 | be difficult [verb] [noun] | 222 |
|
| 3 | difficult [verb] this [noun] | 39 |
|
| 4 | be difficult [verb] this | 33 |
|
