| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] should be [verb] | 215 |
|
| 2 | [Wh adv] [pron] should be [vb pp] | 182 |
|
| 3 | [adv] [pron] should be taught | 7 |
|
| 4 | [Wh adv] [pron] [modal v] be taught | 5 |
|
| 5 | [Wh adv] [pron] should [be] taught | 5 |
|
| 6 | [Wh adv] [pron] should [be] taught | 5 |
|
| 7 | [Wh adv] [pron] should be teach | 5 |
|
| 8 | [Wh adv] [pron] should be taught | 5 |
|
