| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] is [adv] [vb pp] | 339 |
|
| 2 | [prep] [pron] be often [vb pp] | 38 |
|
| 3 | [prep] [pron] [be] often [vb pp] | 38 |
|
| 4 | [prep] [pron] [is] often [vb pp] | 29 |
|
| 5 | [prep] [pron] is often [verb] | 28 |
|
