| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] problem [adv] | 583 |
|
| 2 | [art] problem [subord] | 354 |
|
| 3 | [art] [subord] [adv] | 71 |
|
| 4 | problem [subord] [adv] | 44 |
|
