| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which must have [verb] | 74 |
|
| 2 | which must have [vb pp] | 74 |
|
| 3 | [pron] must have seemed | 59 |
|
| 4 | which [modal v] have seemed | 10 |
|
| 5 | [Wh det] must have seemed | 8 |
|
| 6 | which must have seemed | 5 |
|
| 7 | which must have seemed | 5 |
|
| 8 | which must [verb] seemed | 5 |
|
| 9 | which must [vb infin] seemed | 5 |
|
| 10 | which must have seem | 5 |
|
