| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] a [adj] | 16282 |
|
| 2 | [be] [v-ing] a [adj] | 4760 |
|
| 3 | it [be] [v-ing] [adj] | 454 |
|
| 4 | it [be] [v-ing] a | 385 |
|
| 5 | it [v-ing] a [adj] | 15 |
|
