| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] be [verb] | 12234 |
|
| 2 | [pron] [modal v] be [v-ing] | 9493 |
|
| 3 | [pers pn] [modal v] be [v-ing] | 8632 |
|
| 4 | it [modal v] [be] [v-ing] | 536 |
|
| 5 | it [modal v] be [v-ing] | 536 |
|
