| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb past] [been] going on for | 5 |
|
| 2 | [noun pl] [vb past] been [v-ing] on for | 5 |
|
| 3 | [noun pl] had [been] [v-ing] on for | 5 |
|
| 4 | [noun pl] [vb past] [been] [v-ing] on for | 5 |
|
