| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] had be look for | 5 |
|
| 2 | [noun prp] had been look for | 5 |
|
| 3 | [noun prp] had [been] look for | 5 |
|
| 4 | [noun prp] had [be] looking for | 5 |
|
