| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] have [noun] | 155 |
|
| 2 | [pron] [modal v] have difficulty | 46 |
|
| 3 | [pers pn] [modal v] have difficulty | 38 |
|
| 4 | they [modal v] [vb infin] difficulty | 9 |
|
| 5 | they [modal v] [verb] difficulty | 9 |
|
| 6 | they [modal v] have difficulty | 7 |
|
| 7 | they [modal v] have difficulty | 6 |
|
