| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] to be concerned | 5 |
|
| 2 | [be] [vb pp] to be concerned | 5 |
|
| 3 | be [vb pp] to [be] concerned | 5 |
|
| 4 | [be] [vb pp] to [be] concerned | 5 |
|
