| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] a | 342 |
|
| 2 | must have had a | 86 |
|
| 3 | must have made a | 22 |
|
| 4 | must have taken a | 21 |
|
| 5 | must have cost a | 16 |
|
| 6 | must have got a | 15 |
|
| 7 | must have seemed a | 13 |
|
| 8 | must have looked a | 7 |
|
| 9 | must have done a | 6 |
|
| 10 | must have seen a | 6 |
|
| 11 | must have spent a | 5 |
|
