| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have been [det] | 42 |
|
| 2 | [pers pn] could have been [det] | 28 |
|
| 3 | it could have been [det] | 19 |
|
| 4 | it could have been [det] | 19 |
|
| 5 | [pron] could have been any | 18 |
|
| 6 | there could have been [det] | 12 |
|
| 7 | there could have been [det] | 12 |
|
| 8 | [ex0] could have been [det] | 12 |
|
| 9 | [pron] could have been some | 6 |
|
