| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] if it [adv] happen | 6 |
|
| 2 | [adv] if it [adv] happen | 6 |
|
| 3 | if it [verb] [adv] happen | 26 |
|
| 4 | if it have [adv] happen | 19 |
|
| 5 | if it [vb past] [adv] happen | 17 |
|
| 6 | if it had [adv] happen | 16 |
|
| 7 | if it [vb -s] [adv] happen | 9 |
|
| 8 | if it do [adv] happen | 7 |
|
| 9 | if it does [adv] happen | 6 |
|
