| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must have been [adj] | 176 |
|
| 2 | [noun sg] must have been [adj] | 120 |
|
| 3 | [noun pl] must have been [adj] | 53 |
|
| 4 | [noun prp] must have been [adj] | 34 |
|
| 5 | [noun] must have been [num] | 16 |
|
| 6 | [noun] must have been one | 12 |
|
| 7 | [noun] must have been one | 12 |
|
| 8 | [noun] must have been [adj -er] | 10 |
|
| 9 | [noun] must have been [det] | 8 |
|
