| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [vb pp] [conj] | 3998 |
|
| 2 | [be] often [vb pp] [conj] | 485 |
|
| 3 | be often [vb pp] [conj] | 485 |
|
| 4 | [is] often [vb pp] [conj] | 285 |
|
| 5 | is often [verb] [conj] | 283 |
|
