| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] on [prep] some | 15 |
|
| 2 | have [been] [v-ing] on for some | 15 |
|
| 3 | have [been] going on [prep] some | 13 |
|
| 4 | had [been] [v-ing] on [prep] some | 7 |
|
| 5 | has [been] [v-ing] on [prep] some | 5 |
|
