| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be the first | 590 |
|
| 2 | must be the [adj] | 309 |
|
| 3 | must be the [num ord] | 35 |
|
| 4 | must be [art] first | 22 |
|
| 5 | must [be] the first | 20 |
|
| 6 | must be the first | 20 |
|
| 7 | must [be] the first | 20 |
|
| 8 | must be the first | 20 |
|
