| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [v-ing] [det] [noun] | 1466 |
|
| 2 | [pers pn] [be] [v-ing] [det] [noun] | 1321 |
|
| 3 | it [be] [verb] [det] [noun] | 479 |
|
| 4 | it [be] [v-ing] [adj] [noun] | 251 |
|
| 5 | it [be] [v-ing] [det] [noun] | 77 |
|
