| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [been] the [adj] | 62 |
|
| 2 | [modal v] have [been] the last | 21 |
|
| 3 | must have [been] the last | 9 |
|
| 4 | must [verb] [been] the last | 9 |
|
| 5 | must have [been] [art] last | 9 |
|
| 6 | must have [been] [art] last | 9 |
|
| 7 | must have [be] the last | 9 |
|
