| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [verb] by | 405 |
|
| 2 | [conj] it is often [verb] | 75 |
|
| 3 | it is often [verb] by | 20 |
|
| 4 | [conj] is often [verb] by | 8 |
|
