| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [verb] for | 1516 |
|
| 2 | had [been] [v-ing] for | 496 |
|
| 3 | have [been] looking for | 156 |
|
| 4 | [verb] [been] looking for | 156 |
|
| 5 | had [been] looking [prep] | 77 |
|
| 6 | had [been] looking [prep] | 77 |
|
| 7 | [vb past] [been] looking for | 48 |
|
| 8 | had [been] looking for | 34 |
|
| 9 | had [been] look for | 34 |
|
| 10 | had [be] looking for | 34 |
|
