| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] if it [verb] | 85 |
|
| 2 | [to-vb] if it [vb -s] | 59 |
|
| 3 | to see if it [verb] | 48 |
|
| 4 | [to-vb] if it [vb past] | 25 |
|
| 5 | [to-vb] if it have | 19 |
|
| 6 | [to-vb] if it had | 9 |
|
| 7 | [to-vb] if it has | 8 |
|
