| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] it [verb] be | 194 |
|
| 2 | [prep] [pron] [v-ing] be | 73 |
|
| 3 | [prep] [pers pn] [v-ing] be | 35 |
|
| 4 | [prep] it [v-ing] [be] | 10 |
|
| 5 | [prep] it [v-ing] be | 10 |
|
| 6 | [prep] it [v-ing] be | 10 |
|
