| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [be] to be teach | 7 |
|
| 2 | what be to be teach | 7 |
|
| 3 | what [be] to be taught | 7 |
|
| 4 | what [is] to be teach | 5 |
|
| 5 | what is to be teach | 5 |
|
