| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have [been] a [adj] | 85 |
|
| 2 | could have [been] a [adj] | 75 |
|
| 3 | could [adv] have [been] [adj] | 62 |
|
| 4 | could [adv] have [been] a | 33 |
|
| 5 | could [adv] have a [adj] | 16 |
|
