| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been [v-ing] [det] | 35 |
|
| 2 | [modal v] have been [v-ing] [det] | 32 |
|
| 3 | must have been [v-ing] [det] | 12 |
|
| 4 | must have been [v-ing] [det] | 12 |
|
| 5 | should have been [v-ing] [det] | 7 |
|
| 6 | [modal v] have been [v-ing] that | 7 |
|
| 7 | should have been [v-ing] [det] | 7 |
|
| 8 | [modal v] have been [v-ing] some | 7 |
|
| 9 | [modal v] have been [v-ing] this | 6 |
|
| 10 | [modal v] have been doing [det] | 6 |
|
| 11 | [modal v] have been [v-ing] all | 5 |
|
| 12 | would have been [v-ing] [det] | 5 |
|
