| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] | 9543 |
|
| 2 | [pron] should be [vb pp] | 4175 |
|
| 3 | [pron] should be [prep] | 476 |
|
| 4 | [pron] be [vb pp] [prep] | 472 |
|
