| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [prep] | 1400 |
|
| 2 | should be [prep] | 1400 |
|
| 3 | [vb mod] be by | 228 |
|
| 4 | [modal v] be by | 228 |
|
| 5 | should be by | 20 |
|
| 6 | should [be] by | 20 |
|
| 7 | should be by | 20 |
|
| 8 | should be by | 20 |
|
| 9 | should [be] by | 20 |
|
