| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had more [noun] | 265 |
|
| 2 | had more [noun sg] | 188 |
|
| 3 | had [adj] difficulty | 122 |
|
| 4 | had [det] difficulty | 59 |
|
| 5 | [verb] more difficulty | 30 |
|
| 6 | have more difficulty | 23 |
|
| 7 | [vb past] more difficulty | 7 |
|
| 8 | had more difficulty | 6 |
|
| 9 | had more difficulty | 6 |
|
