| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] had a significant | 22 |
|
| 2 | have had a significant | 22 |
|
| 3 | has had a significant | 10 |
|
| 4 | [vb -s] had a significant | 10 |
|
| 5 | have had a significant | 6 |
|
| 6 | [vb base] had a significant | 6 |
|
| 7 | [adv] had a significant | 5 |
|
| 8 | had a significant [noun] | 27 |
|
| 9 | had a significant [noun sg] | 27 |
|
| 10 | had a significant impact | 12 |
|
| 11 | had a significant impact | 12 |
|
| 12 | had a significant effect | 6 |
|
| 13 | had a significant effect | 6 |
|
