| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [is] [verb] | 13659 |
|
| 2 | [is] often [verb] | 1943 |
|
| 3 | [noun prp] often [verb] | 275 |
|
| 4 | [noun prp] [is] often | 72 |
|
