| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | student [is] [letter] test | 26 |
|
| 2 | student [be] t test | 26 |
|
| 3 | student [be] [letter] test | 26 |
|
| 4 | student 's [letter] test | 26 |
|
| 5 | student be [letter] test | 26 |
|
