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Letter-Doku
1-2
Place in each empty cell a letter such that:
• Six different letters remain in each row.
•In each column there are six different letters.
• In each demarcated region of six cells there
are six different letters.

Only the letters already given are us
At the end, in one of the diagonals you will
be able to read the name of an animal.
Which one is it?
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