| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must be | 758 |
|
| 2 | they must [be] | 758 |
|
| 3 | they must be | 757 |
|
| 4 | they must [be] | 757 |
|
| 5 | they must [be] | 725 |
|
| 6 | them must [be] | 33 |
|
