| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [v-ing] [prep] | 33951 |
|
| 2 | if [pron] [be] [v-ing] | 6921 |
|
| 3 | if [pron] [be] [prep] | 2657 |
|
| 4 | if [pron] [v-ing] [prep] | 13 |
|
