| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] [verb] | 126601 |
|
| 2 | [noun] often [verb] | 3969 |
|
| 3 | [noun] [is] often | 1982 |
|
| 4 | [is] often [verb] | 1943 |
|
