| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [prep] the [det] [noun sg] | 10 |
|
| 2 | must be [prep] [art] [det] [noun sg] | 10 |
|
| 3 | must be [prep] [art] [det] [noun sg] | 10 |
|
| 4 | must be [prep] [art] same [noun sg] | 10 |
|
