| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] it be [prep] [v-ing] | 34 |
|
| 2 | [adj] it [be] [prep] [v-ing] | 34 |
|
| 3 | [adj] [pron] is [prep] [v-ing] | 26 |
|
| 4 | [adj] it [is] [prep] [v-ing] | 22 |
|
| 5 | [adj] it is [prep] [verb] | 19 |
|
