| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been at | 380 |
|
| 2 | has been at | 188 |
|
| 3 | have been at | 166 |
|
| 4 | have been at | 149 |
|
| 5 | 've been at | 50 |
|
| 6 | 'd been at | 45 |
|
| 7 | 's been at | 42 |
|
| 8 | to have been at | 34 |
|
| 9 | having been at | 13 |
|
