| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have [been] [art] [adj] | 185 |
|
| 2 | could have [been] [art] [adj] | 97 |
|
| 3 | could [adv] have [been] [art] | 66 |
|
| 4 | could [adv] have [been] [adj] | 32 |
|
| 5 | could [adv] have [art] [adj] | 26 |
|
