| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] [v-ing] | 2114 |
|
| 2 | it be [prep] [pers pn] | 787 |
|
| 3 | be [prep] [pers pn] [v-ing] | 54 |
|
| 4 | it be [pers pn] [v-ing] | 41 |
|
| 5 | it [prep] [pers pn] [v-ing] | 12 |
|
