| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [prep] [v-ing] | 1207 |
|
| 2 | it is [prep] [adj] | 423 |
|
| 3 | it is [v-ing] [adj] | 116 |
|
| 4 | is [prep] [v-ing] [adj] | 109 |
|
| 5 | it [prep] [v-ing] [adj] | 54 |
|
