| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have had an | 73 |
|
| 2 | [modal v] have had an | 72 |
|
| 3 | may have had an | 17 |
|
| 4 | may have had an | 17 |
|
| 5 | would have had an | 16 |
|
| 6 | would have had an | 16 |
|
| 7 | must have had an | 12 |
|
| 8 | must have had an | 12 |
|
| 9 | should have had an | 12 |
|
| 10 | should have had an | 12 |
|
| 11 | will have had an | 6 |
|
| 12 | might have had an | 6 |
|
| 13 | will have had an | 6 |
|
| 14 | might have had an | 6 |
|
