| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] [noun] [prep] [noun] | 411 |
|
| 2 | [be] [v-ing] [noun] for [noun] | 278 |
|
| 3 | [is] [verb] [noun] for [noun] | 101 |
|
