| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | often [vb pp] [prep] be [adv] | 19 |
|
| 2 | often [vb pp] to [be] [adv] | 19 |
|
| 3 | often [vb pp] [prep] [be] [adv] | 18 |
|
