| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [adj] | 426 |
|
| 2 | [n mass] should be [vb pp] | 235 |
|
| 3 | [n mass] be [vb pp] [adj] | 135 |
|
| 4 | [n mass] should be [adj] | 74 |
|
