| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] [v-ing] | 2114 |
|
| 2 | [adj] it be [prep] | 511 |
|
| 3 | [adj] be [prep] [v-ing] | 253 |
|
| 4 | [adj] it be [v-ing] | 229 |
|
