| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [vb pp] a | 1374 |
|
| 2 | [is] a [noun prp] | 621 |
|
| 3 | [is] [vb pp] [noun prp] | 444 |
|
| 4 | [vb pp] a [noun prp] | 422 |
|
