| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has been [vb pp] in [noun pl] | 54 |
|
| 2 | [noun sg] has been [vb pp] in [noun pl] | 45 |
|
| 3 | [noun] has been [vb pp] in terms | 14 |
|
| 4 | [noun] has been [vb pp] in patients | 8 |
|
| 5 | [noun pl] has been [vb pp] in [noun pl] | 6 |
|
| 6 | [noun] has been found in [noun pl] | 6 |
|
| 7 | [noun] has been reported in [noun pl] | 5 |
|
