| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [det] [is] [art] | 157 |
|
| 2 | be [adj] [is] a | 153 |
|
| 3 | be [det] [be] a | 72 |
|
| 4 | [be] [det] [is] a | 61 |
|
