This grid contains 4 groups of 4. Each group is connected by something very specific.
Click / tap the squares to try put them in a group. If you click 4 squares that belong to a group,
you'll be asked to type in the connecting theme.
Continue until you've found all 4 groups and figured out the connection within each group!
Please pretend that "earend" is a word for the purposes of this puzzle, thank you
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