| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] on for some time | 12 |
|
| 2 | be [v-ing] on for some time | 12 |
|
| 3 | be [v-ing] on [prep] some time | 12 |
|
| 4 | been [v-ing] on [prep] some time | 12 |
|
| 5 | be going on [prep] some time | 9 |
|
