| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [v-ing] to | 38 |
|
| 2 | [modal v] have [been] [v-ing] to | 38 |
|
| 3 | [vb mod] have [been] [v-ing] to | 38 |
|
| 4 | [modal v] have [been] [v-ing] to | 37 |
|
| 5 | must have [been] [v-ing] to | 10 |
|
| 6 | must have [been] [v-ing] to | 10 |
|
| 7 | might have [been] [v-ing] to | 7 |
|
| 8 | might have [been] [v-ing] to | 7 |
|
| 9 | may have [been] [v-ing] to | 6 |
|
| 10 | would have [been] [v-ing] to | 6 |
|
| 11 | would have [been] [v-ing] to | 6 |
|
| 12 | may have [been] [v-ing] to | 6 |
|
| 13 | [modal v] have [been] listening to | 6 |
|
| 14 | [modal v] have [been] speaking to | 5 |
|
| 15 | [modal v] have [been] referring to | 5 |
|
