| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [vb mod] have been due to | 12 |
|
| 2 | [adj] [modal v] have been due to | 12 |
|
| 3 | [adj] [noun] have been due to | 12 |
|
| 4 | [adj] may have been due to | 9 |
|
| 5 | [adj] may have been due to | 9 |
|
| 6 | [adj] [noun pl] have been due to | 8 |
|
| 7 | [adj] have been due to [art] | 6 |
|
| 8 | [adj] have been due to [art] | 6 |
|
| 9 | [adj] have been due to the | 5 |
|
| 10 | [adj] have been due to the | 5 |
|
