| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [conj] [det] [noun] | 911 |
|
| 2 | problem [is] [conj] [det] | 81 |
|
| 3 | problem [conj] [det] [noun] | 57 |
|
| 4 | problem [is] [conj] [noun] | 57 |
|
| 5 | problem [is] [det] [noun] | 38 |
|
