| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [modal v] | 175 |
|
| 2 | is [vb mod] | 175 |
|
| 3 | [be] should | 70 |
|
| 4 | be should | 70 |
|
| 5 | [is] should | 45 |
|
| 6 | is should | 25 |
|
