| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] often [vb pp] by [noun] | 49 |
|
| 2 | is often [verb] by [noun] | 49 |
|
| 3 | [is] often [verb] by [noun pl] | 25 |
|
| 4 | [is] often [verb] by [noun sg] | 17 |
|
| 5 | [is] often [verb] by [n mass] | 5 |
|
