Four-sided Dice Puzzle

The Puzzle:

Four-sided Dice
I have three special four-sided dice.

They have one letter on each side.

When I roll them together I get three random letters which I try to rearrange into a word. In my eight goes so far I have made the words:

CAT, SON, POD, RIG, PEG, TAP, DIN, APE

What are the letters on each dice?



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-\./^\./-


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