| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] [adj] to | 18 |
|
| 2 | must have [verb] [adj] to | 18 |
|
| 3 | [modal v] have seemed [adj] to | 11 |
|
| 4 | must have seemed [adj] [prep] | 6 |
|
| 5 | must have seem [adj] to | 5 |
|
| 6 | must [verb] seemed [adj] to | 5 |
|
