| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] a [adj] | 10238 |
|
| 2 | [is] [v-ing] a [adj] | 1307 |
|
| 3 | it [is] [v-ing] [adj] | 524 |
|
| 4 | it [is] [v-ing] a | 258 |
|
| 5 | it [v-ing] a [adj] | 17 |
|
