| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [conj] [pron] [adv] [verb] | 276 |
|
| 2 | problem is [conj] [pron] [verb] | 56 |
|
| 3 | problem [conj] [pron] [adv] [verb] | 15 |
|
| 4 | problem is [conj] [pron] [adv] | 8 |
|
