| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been look at | 32 |
|
| 2 | [vb past] [been] look at | 32 |
|
| 3 | [vb past] be look at | 32 |
|
| 4 | [vb past] [be] looking at | 31 |
|
| 5 | had [be] look at | 28 |
|
