| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [conj] [art] | 6969 |
|
| 2 | problem [is] [conj] | 647 |
|
| 3 | problem [conj] [art] | 511 |
|
| 4 | problem [is] [art] | 255 |
|
