| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have [been] concerned | 39 |
|
| 2 | [noun pl] have [be] concerned | 39 |
|
| 3 | [noun pl] have be concerned | 39 |
|
| 4 | [noun pl] have been concerned | 39 |
|
| 5 | [noun pl] have [be] concerned | 22 |
|
| 6 | [noun pl] had [be] concerned | 11 |
|
| 7 | [noun pl] has [be] concerned | 6 |
|
