| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have been [det] [noun sg] | 21 |
|
| 2 | [pers pn] could have been [det] [noun sg] | 10 |
|
| 3 | [ex0] could have been [det] [noun sg] | 9 |
|
| 4 | there could have been [det] [noun sg] | 9 |
|
| 5 | there could have been [det] [noun sg] | 9 |
|
| 6 | it could have been [det] [noun sg] | 6 |
|
| 7 | it could have been [det] [noun sg] | 6 |
|
| 8 | could [adv] have been [det] [noun sg] | 8 |
|
| 9 | could [not/n't] have been [det] [noun sg] | 6 |
|
| 10 | could not have been [det] [noun sg] | 6 |
|
| 11 | could have been [prep] [det] [noun sg] | 10 |
|
| 12 | could have been [prep] [det] [noun sg] | 10 |
|
| 13 | could have been in [det] [noun sg] | 6 |
|
| 14 | could have been in [det] [noun sg] | 6 |
|
| 15 | could have been [det] [adj] [noun sg] | 6 |
|
| 16 | could have been [det] [adj] [noun sg] | 5 |
|
| 17 | could have been [det] [noun sg] [prep] | 10 |
|
| 18 | could have been [det] [noun sg] [prep] | 10 |
|
