| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] the | 49701 |
|
| 2 | [prep] if the | 1165 |
|
| 3 | [prep] if [v-ing] | 778 |
|
| 4 | if [v-ing] the | 115 |
|
