| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [v-ing] [adj] | 839 |
|
| 2 | it [vb past] [be] [adj] | 535 |
|
| 3 | [vb past] [be] [v-ing] [adj] | 488 |
|
| 4 | it [vb past] [be] [v-ing] | 135 |
|
| 5 | it [vb past] [v-ing] [adj] | 26 |
|
