How many words can one make using the combination requested?There are 2 words that can be found for any word that has 'na' in and ends with 'ko'.
What is the longest word you can derive from this list?The longest word is 6 characters, which is 'nanako'.
What's the highest possible score you're able to get in Scrabble from this list of words containing 'na' and ending with 'ko'?Given that there a small number of words possible, you're forced to select 'nanako' which totals 10 points.