| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] [prep] some [noun pl] | 63 |
|
| 2 | have been [vb pp] in some [noun pl] | 52 |
|
| 3 | have been [vb pp] by some [noun pl] | 42 |
|
| 4 | have been [vb pp] [prep] some [noun pl] | 27 |
|
| 5 | have been [vb pp] for some [noun pl] | 22 |
|
| 6 | had been [vb pp] [prep] some [noun pl] | 16 |
|
| 7 | have been [vb pp] [prep] some years | 15 |
|
| 8 | have been [vb pp] [prep] some cases | 8 |
|
| 9 | have been used [prep] some [noun pl] | 8 |
|
| 10 | have been [vb pp] [prep] some quarters | 7 |
|
| 11 | have been [vb pp] [prep] some writers | 6 |
|
| 12 | have been [vb pp] [prep] some studies | 6 |
|
| 13 | have been [vb pp] [prep] some patients | 5 |
|
| 14 | have been found [prep] some [noun pl] | 5 |
|
| 15 | 's been [vb pp] [prep] some [noun pl] | 5 |
|
