| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [pers pn] [prep] | 2731 |
|
| 2 | [is] [verb] [pers pn] [prep] | 756 |
|
| 3 | [is] [v-ing] [pron] [prep] | 571 |
|
