| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] on | 92 |
|
| 2 | have [been] [v-ing] on | 92 |
|
| 3 | have [been] working on | 38 |
|
| 4 | have [been] concentrating on | 6 |
|
| 5 | have [been] living on | 6 |
|
| 6 | have [been] going on | 6 |
|
