| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [conj] [noun sg] | 501 |
|
| 2 | is often [verb] [conj] | 283 |
|
| 3 | often [verb] [conj] [noun sg] | 53 |
|
| 4 | is often [verb] [noun sg] | 14 |
|
