| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been search [prep] | 34 |
|
| 2 | have been search for | 29 |
|
| 3 | have been search for | 29 |
|
| 4 | have been searching [prep] | 28 |
|
| 5 | had been search [prep] | 15 |
|
| 6 | have been search [prep] | 7 |
|
| 7 | have been searched [prep] | 6 |
|
| 8 | has been search [prep] | 6 |
|
