| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [v-ing] on for some | 7 |
|
| 2 | [vb past] been [v-ing] on [prep] some | 7 |
|
| 3 | [vb past] been [v-ing] on [prep] some | 7 |
|
| 4 | [vb past] been [v-ing] on for some | 7 |
|
| 5 | [vb past] been [v-ing] on [prep] some | 7 |
|
| 6 | had been [v-ing] on [prep] some | 7 |
|
| 7 | [vb past] been going on [prep] some | 6 |
|
