| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not have been [v-ing] | 72 |
|
| 2 | might not have been [verb] | 35 |
|
| 3 | might [adv] have been [v-ing] | 18 |
|
| 4 | might not have [be] [v-ing] | 5 |
|
| 5 | might not have be [v-ing] | 5 |
|
| 6 | might not have [been] [v-ing] | 5 |
|
| 7 | might not [verb] been [v-ing] | 5 |
|
