| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been at [noun] | 55 |
|
| 2 | have been at [noun sg] | 21 |
|
| 3 | have been at [noun pl] | 20 |
|
| 4 | have been at [noun prp] | 14 |
|
| 5 | have been at pain | 13 |
|
| 6 | have been at pains | 13 |
|
| 7 | have been at work | 11 |
|
| 8 | have been at work | 11 |
|
