| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he had been looking for | 8 |
|
| 2 | he had [been] looking for | 8 |
|
| 3 | he had [be] looking for | 8 |
|
| 4 | he had be looking for | 8 |
|
| 5 | he had [be] looking for | 8 |
|
