| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at [art] | 66532 |
|
| 2 | [noun pl] at [art] | 15321 |
|
| 3 | problems [prep] [art] | 2023 |
|
| 4 | problems [prep] [art] | 2023 |
|
| 5 | problem at [art] | 133 |
|
| 6 | problems at [art] | 75 |
|
| 7 | problems at [art] | 75 |
|
