| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he had [been] [verb] | 2906 |
|
| 2 | he had [been] [v-ing] | 959 |
|
| 3 | [pron] had [been] searching | 16 |
|
| 4 | he have [been] searching | 11 |
|
| 5 | he [verb] [been] searching | 11 |
|
| 6 | he [vb past] [been] searching | 8 |
|
| 7 | he had [been] search | 7 |
|
| 8 | he had [be] searching | 7 |
|
