| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [prep] [adj] | 394 |
|
| 2 | they must be [verb] [prep] | 142 |
|
| 3 | they must [verb] [prep] [adj] | 11 |
|
| 4 | they must be [verb] [adj] | 9 |
|
| 5 | they must be [prep] [adj] | 5 |
|
