| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there must have been [adj] | 84 |
|
| 2 | [ex0] must have been [adj] | 83 |
|
| 3 | [ex0] must have been [det] | 47 |
|
| 4 | [ex0] must have been some | 24 |
|
| 5 | [ex0] must have been some | 24 |
|
| 6 | [ex0] must have been [adj] | 19 |
|
| 7 | [ex0] must have been many | 18 |
|
| 8 | [ex0] must have been many | 18 |
|
| 9 | [ex0] must have been [num] | 18 |
|
| 10 | [ex0] must have been other | 6 |
|
| 11 | [ex0] must have been other | 6 |
|
