| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be a problem for [noun pl] | 11 |
|
| 2 | [be] a problem for [noun pl] | 11 |
|
| 3 | [be] a problem for [noun pl] | 11 |
|
| 4 | [is] a problem for [noun pl] | 7 |
|
| 5 | is a problem for [noun pl] | 6 |
|
