| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] no effect | 16 |
|
| 2 | it have no effect | 16 |
|
| 3 | it [vb -s] no effect | 9 |
|
| 4 | it has no effect | 9 |
|
| 5 | it [vb past] no effect | 7 |
|
| 6 | it had no effect | 7 |
|
