| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [prep] | 1400 |
|
| 2 | should be [prep] | 1400 |
|
| 3 | [modal v] be to | 431 |
|
| 4 | should be to | 22 |
|
| 5 | should be to | 22 |
|
| 6 | should [be] to | 22 |
|
| 7 | should [be] to | 22 |
|
