| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [prep] [adj] | 89 |
|
| 2 | must be in [adj] | 35 |
|
| 3 | must be of [adj] | 30 |
|
| 4 | must be [prep] good | 12 |
|
| 5 | must be on [adj] | 7 |
|
| 6 | must be [prep] great | 5 |
|
