| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] [be] | 12517 |
|
| 2 | it [vb past] [be] | 4472 |
|
| 3 | [pron] did [be] | 348 |
|
| 4 | [pers pn] did [be] | 335 |
|
| 5 | it do [be] | 59 |
|
| 6 | it did [be] | 18 |
|
