| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [am/are] [v-ing] [noun] [prep] [noun] | 393 |
|
| 2 | [be] [v-ing] [noun] for [noun] | 278 |
|
| 3 | [am/are] [verb] [noun] for [noun] | 89 |
|
