| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] a | 7885 |
|
| 2 | be [vb pp] [num ord] | 1874 |
|
| 3 | be a [num ord] | 802 |
|
| 4 | [vb pp] a [num ord] | 397 |
|
