| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] problem [is] | 1457 |
|
| 2 | [art] problem [pron] | 456 |
|
| 3 | problem [is] [pron] | 119 |
|
| 4 | [art] [is] [pron] | 28 |
|
