| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] on | 1091 |
|
| 2 | had been [vb pp] on | 903 |
|
| 3 | had been left [prep] | 125 |
|
| 4 | have been left on | 24 |
|
| 5 | [verb] been left on | 24 |
|
| 6 | had [been] left on | 17 |
|
| 7 | had been leave on | 17 |
|
| 8 | had be left on | 17 |
|
| 9 | [vb past] been left on | 17 |
|
| 10 | had [be] left on | 17 |
|
