| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have be left | 38 |
|
| 2 | which [verb] been left | 38 |
|
| 3 | which [verb] be left | 38 |
|
| 4 | which had be left | 31 |
|
| 5 | which [vb past] be left | 31 |
|
