Here are the matched prefixes with the corresponding words to create new words:
- un + ripe = unripe
- dis + valid = disvalid (though "invalid" is more common)
- in + obey = inobey (usually "disobey" is used, but "in" is not commonly prefixed to "obey")
- mis + agree = misagree (though "disagree" is more common, "mis" is not commonly prefixed to this word)
- over + cover = covert (though more commonly "overcover" might be used contextually)
- re + count = recount
Based on the commonly accepted words, the best matches would be:
- un + ripe = unripe
- dis + valid = invalid
- in + obey = disobey
- mis + agree = disagree
- over + cover = uncover
- re + count = recount
Please adjust according to the specific words from the video if they differ.