| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] be on | 16 |
|
| 2 | [vb past] been on | 16 |
|
| 3 | [vb past] [been] on | 16 |
|
| 4 | [vb past] [be] on | 16 |
|
| 5 | had [be] on | 12 |
|
