In total, how many words are there using this combination of letters?On this page of words containing 'r' and ending with 'ako', you have just 1 combination which can be selected.
In Scrabble, what's the highest score possible from words that contain 'r' and end in 'ako'?As there is only a single word possible, your only viable option is 'korimako' for a score of 18 points.