| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] by | 795 |
|
| 2 | must be [vb pp] by | 795 |
|
| 3 | must be balanced [prep] | 22 |
|
| 4 | must be balanced [prep] | 22 |
|
| 5 | [vb mod] be balanced by | 17 |
|
| 6 | [modal v] be balanced by | 17 |
|
| 7 | must [be] balanced by | 7 |
|
| 8 | must be balance by | 7 |
|
| 9 | must be balanced by | 7 |
|
| 10 | must be balanced by | 7 |
|
| 11 | must [be] balanced by | 7 |
|
| 12 | must be balanced by | 7 |
|
