| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] problem for the | 117 |
|
| 2 | the problem for the | 59 |
|
| 3 | the problem for the | 59 |
|
| 4 | a problem for the | 54 |
|
| 5 | a problem for the | 54 |
|
