| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [v-ing] for | 55 |
|
| 2 | [modal v] have [been] [v-ing] for | 55 |
|
| 3 | [vb mod] have [been] [v-ing] for | 55 |
|
| 4 | [modal v] have [been] [v-ing] for | 53 |
|
| 5 | must have [been] [v-ing] for | 18 |
|
| 6 | must have [been] [v-ing] for | 18 |
|
| 7 | would have [been] [v-ing] for | 16 |
|
| 8 | would have [been] [v-ing] for | 14 |
|
| 9 | [modal v] have [been] looking for | 13 |
|
| 10 | could have [been] [v-ing] for | 10 |
|
| 11 | could have [been] [v-ing] for | 10 |
|
