| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] a | 342 |
|
| 2 | must have had a | 86 |
|
| 3 | must have have a | 86 |
|
| 4 | must have made a | 22 |
|
| 5 | must have make a | 22 |
|
| 6 | must have taken a | 21 |
|
| 7 | must have take a | 21 |
|
| 8 | must have cost a | 16 |
|
| 9 | must have cost a | 16 |
|
| 10 | must have got a | 15 |
|
| 11 | must have get a | 15 |
|
| 12 | must have seem a | 13 |
|
| 13 | must have seemed a | 13 |
|
| 14 | must have looked a | 7 |
|
| 15 | must have look a | 7 |
|
| 16 | must have seen a | 6 |
|
| 17 | must have do a | 6 |
|
| 18 | must have done a | 6 |
|
| 19 | must have see a | 6 |
|
| 20 | must have spent a | 5 |
|
| 21 | must have spend a | 5 |
|
