| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [conj] it [is] | 1271 |
|
| 2 | problem [conj] it [is] | 54 |
|
| 3 | problem [be] [conj] it | 45 |
|
| 4 | problem [be] it [is] | 6 |
|
