| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been [v-ing] [prep] | 55 |
|
| 2 | to have [been] [v-ing] for | 13 |
|
| 3 | to have [been] [v-ing] in | 10 |
|
| 4 | to have [been] working [prep] | 6 |
|
| 5 | to have [been] [v-ing] with | 6 |
|
| 6 | to have [been] [v-ing] at | 5 |
|
