| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] [prep] [art] [adj] | 415 |
|
| 2 | [modal v] [verb] [prep] [art] first | 149 |
|
| 3 | must [verb] [prep] [art] [num ord] | 23 |
|
| 4 | must [verb] [prep] [art] first | 5 |
|
| 5 | must [verb] [prep] [art] first | 5 |
|
