| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb mod] have been [v-ing] | 68 |
|
| 2 | i must have been [v-ing] | 20 |
|
| 3 | i should have been [v-ing] | 14 |
|
| 4 | i would have been [v-ing] | 13 |
|
| 5 | i 'd have been [v-ing] | 8 |
|
| 6 | i might have been [v-ing] | 7 |
|
| 7 | i [vb mod] have been doing | 5 |
|
