| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] some [noun] | 3680 |
|
| 2 | [vb past] some [noun sg] | 2325 |
|
| 3 | [vb past] [adj] difficulty | 162 |
|
| 4 | [verb] some difficulty | 93 |
|
| 5 | [vb past] [det] difficulty | 79 |
|
| 6 | [vb past] some difficulty | 33 |
|
| 7 | [vb past] some difficulty | 30 |
|
