| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] a significant | 23 |
|
| 2 | could [verb] a significant | 23 |
|
| 3 | could have a significant | 7 |
|
| 4 | could have a significant | 7 |
|
| 5 | could make a significant | 7 |
|
| 6 | could make a significant | 7 |
|
