| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] is often [vb pp] | 794 |
|
| 2 | [noun sg] it is [vb pp] | 632 |
|
| 3 | it is often [vb pp] | 362 |
|
| 4 | [noun sg] it is often | 65 |
|
