| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may be due to | 162 |
|
| 2 | [vb infin] be due to | 45 |
|
| 3 | may [vb infin] be due | 30 |
|
| 4 | may [vb infin] due to | 6 |
|
