| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] in some [noun pl] | 56 |
|
| 2 | been [vb pp] in some cases | 9 |
|
| 3 | been [vb pp] in some quarters | 7 |
|
| 4 | been [vb pp] in some patients | 7 |
|
| 5 | been [vb pp] in some studies | 6 |
|
| 6 | been found in some [noun pl] | 5 |
|
| 7 | been used in some [noun pl] | 5 |
|
