| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [noun] | 19723 |
|
| 2 | [v-ing] [noun] [is] | 1979 |
|
| 3 | [be] [v-ing] [is] | 1318 |
|
| 4 | [be] [noun] [is] | 707 |
|
