| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [verb] on for | 33 |
|
| 2 | had [been] [verb] on for | 32 |
|
| 3 | [vb past] [been] [v-ing] on for | 28 |
|
| 4 | [vb past] [been] going on for | 23 |
|
| 5 | [vb past] [been] go on for | 23 |
|
| 6 | [vb past] [been] [vb pp] on for | 5 |
|
