| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [prep] [num ord] | 200 |
|
| 2 | [vb mod] [prep] [num ord] | 200 |
|
| 3 | must [prep] [adj] | 98 |
|
| 4 | must [prep] [num ord] | 5 |
|
