| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adj] [noun] | 4570 |
|
| 2 | had [adj] [noun sg] | 1968 |
|
| 3 | [verb] [adj] difficulty | 244 |
|
| 4 | have [adj] difficulty | 173 |
|
| 5 | had [adj] difficulty | 122 |
|
| 6 | [vb past] [adj] difficulty | 81 |
|
| 7 | had [adj] difficulty | 72 |
|
