| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | might have [verb] | 4339 |
|
| 2 | might have [vb pp] | 3989 |
|
| 3 | [modal v] have noticed | 233 |
|
| 4 | might have noticed | 19 |
|
| 5 | might [verb] noticed | 19 |
|
| 6 | might [vb infin] noticed | 19 |
|
| 7 | might have notice | 19 |
|
