| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] for | 10597 |
|
| 2 | [vb past] [be] [v-ing] | 7136 |
|
| 3 | [vb past] [v-ing] for | 391 |
|
| 4 | [vb past] [be] for | 223 |
|
