| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [conj] [pron] [is] | 1733 |
|
| 2 | problem is [conj] [pron] | 203 |
|
| 3 | problem [conj] [pron] [is] | 95 |
|
| 4 | problem is [pron] [is] | 10 |
|
