| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | houses have been | 97 |
|
| 2 | houses [vb base] been | 49 |
|
| 3 | houses have been | 49 |
|
| 4 | houses had been | 39 |
|
| 5 | houses [vb past] been | 39 |
|
| 6 | houses [vb -s] been | 6 |
|
| 7 | houses has been | 6 |
|
