| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] filed at [noun sg] | 6 |
|
| 2 | must [be] filed at [noun] | 6 |
|
| 3 | must [be] filed at court | 6 |
|
| 4 | must be filed at [noun] | 6 |
|
| 5 | must [be] filed at [noun] | 6 |
|
| 6 | must [be] filed at court | 6 |
|
