| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] could [adv] have been [adj] | 21 |
|
| 2 | [noun sg] could [adv] [vb infin] been [adj] | 21 |
|
| 3 | [noun sg] could [adv] have been [adj] | 21 |
|
| 4 | [noun sg] could not [verb] been [adj] | 13 |
|
| 5 | [noun sg] could [not/n't] [verb] been [adj] | 13 |
|
| 6 | [noun sg] could not [verb] been [adj] | 10 |
|
| 7 | [noun sg] could [adv] [verb] been [adj] | 8 |
|
