| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [be] required at [art] | 11 |
|
| 2 | [noun sg] [be] required at [art] | 10 |
|
| 3 | [be] required at [art] [noun sg] | 11 |
|
| 4 | [be] required at [art] [noun] | 11 |
|
| 5 | [be] required at [art] [adj] | 7 |
|
| 6 | [be] required at [art] [adj] | 7 |
|
