| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be at [art] [noun sg] [prep] | 16 |
|
| 2 | must be at [art] [noun sg] [prep] | 16 |
|
| 3 | must be at the [noun sg] [prep] | 15 |
|
| 4 | must be at the [noun sg] [prep] | 15 |
|
| 5 | must be at [art] [noun sg] of | 13 |
|
| 6 | must be at [art] [noun sg] of | 13 |
|
