| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] a [noun] | 51072 |
|
| 2 | [vb pp] a [noun] | 34350 |
|
| 3 | [is] [vb pp] [noun] | 2358 |
|
| 4 | [is] [vb pp] a | 1374 |
|
