| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] not a valid [noun sg] filename | 7 |
|
| 2 | be not a valid [noun sg] filename | 7 |
|
| 3 | [be] not a valid [noun sg] filename | 7 |
|
| 4 | is not a valid [noun sg] filename | 7 |
|
