| Answer | Crossword Clue |
|---|---|
| XIS | Numbers or letters |
| SYNESTHESIA | Or maybe the subjects have ..., a condition in which letters and numbers are perceived as colors |
| ZIPS | Letters' numbers |
| ZIPCODE | Numbers on letters |
| ZIPS | Numbers on letters |
| ZIPCODES | Numbers needed for letters |
| ONES | Telephone numbers without letters |
| BINGO | Game of letters and numbers |
| OUIJA | Mystic's device with letters and numbers |
