| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be a [noun] | 17655 |
|
| 2 | it be [det] [noun] | 2922 |
|
| 3 | be [det] a [noun] | 1645 |
|
| 4 | it be [det] a | 706 |
|
| 5 | it [det] a [noun] | 37 |
|
