| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [adj] [noun pl] | 393 |
|
| 2 | have been [det] [noun pl] | 212 |
|
| 3 | have been [num] [noun pl] | 78 |
|
| 4 | have been many [noun pl] | 76 |
|
| 5 | have been many [noun pl] | 76 |
|
| 6 | have been [adj] changes | 51 |
|
| 7 | have been some [noun pl] | 49 |
|
| 8 | have been some [noun pl] | 49 |
|
| 9 | have been several [noun pl] | 44 |
|
| 10 | have been several [noun pl] | 44 |
|
| 11 | have been [adj] attempts | 36 |
|
| 12 | have been few [noun pl] | 27 |
|
| 13 | have been few [noun pl] | 27 |
|
| 14 | have been other [noun pl] | 26 |
|
| 15 | have been other [noun pl] | 26 |
|
| 16 | have been [adj] studies | 23 |
|
| 17 | have been numerous [noun pl] | 21 |
|
| 18 | have been numerous [noun pl] | 21 |
|
| 19 | have been two [noun pl] | 20 |
|
| 20 | have been two [noun pl] | 20 |
|
| 21 | have been [adj] developments | 18 |
|
| 22 | have been major [noun pl] | 18 |
|
| 23 | have been major [noun pl] | 18 |
|
| 24 | have been significant [noun pl] | 17 |
|
| 25 | have been [adj] reports | 17 |
|
| 26 | have been [adj -er] [noun pl] | 17 |
|
| 27 | have been significant [noun pl] | 17 |
|
| 28 | have been various [noun pl] | 13 |
|
| 29 | have been various [noun pl] | 13 |
|
| 30 | have been [adj] examples | 12 |
|
