| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] [prep] [be] | 2909 |
|
| 2 | have often [vb pp] [prep] | 187 |
|
| 3 | often [vb pp] [prep] [be] | 109 |
|
| 4 | have often [prep] [be] | 6 |
|
