| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] been [verb] on [prep] | 8 |
|
| 2 | had [adv] been [verb] on [prep] | 8 |
|
| 3 | [vb past] [adv] been go on [prep] | 5 |
|
| 4 | [vb past] [adv] been [v-ing] on [prep] | 5 |
|
| 5 | [vb past] [adv] been going on [prep] | 5 |
|
