| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been empty for [adj] | 18 |
|
| 2 | have been empty for [adj] | 18 |
|
| 3 | [verb] been empty for [det] | 12 |
|
| 4 | [vb past] been empty for [adj] | 8 |
|
| 5 | had been empty for [adj] | 8 |
|
| 6 | has been empty for [adj] | 7 |
|
| 7 | [vb -s] been empty for [adj] | 7 |
|
| 8 | [verb] been empty for [num] | 6 |
|
