| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [letter] should be [vb pp] [prep] | 13 |
|
| 2 | [letter] should be [verb] [prep] | 13 |
|
| 3 | [letter] should be [adj] [prep] | 7 |
|
| 4 | [letter] should be [adj] [prep] | 7 |
|
