Solution to 4: Dash Away, All

This puzzle is a 7-segment display with the indexing based on Santa’s reindeer (Dasher = A, Dancer = B, ... , Donner = G). The reindeer called represent a bit turned on (i.e. 1), while those that are not called are off (i.e. 0). For example, the first group of reindeer called corresponds to 1111001, which would cause the display to output the letter E. Following this for each line yields the answer.


(Image from Wikipedia)

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