| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is for [det] | 205 |
|
| 2 | [pron] is difficult for | 145 |
|
| 3 | is difficult for [det] | 15 |
|
| 4 | [pron] difficult for [det] | 8 |
|
