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The first hint to crack the puzzle "__ fuels; energy sources from ancient organisms" is:

It is a word which contains 6 letters

      

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The second hint to crack the puzzle "__ fuels; energy sources from ancient organisms" is:

It starts with letter f

f      

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The third hint to crack the puzzle "__ fuels; energy sources from ancient organisms" is:

It ends with letter l

f      l

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Looking for extra hints for the puzzle "__ fuels; energy sources from ancient organisms"
f      l
Click on any empty tile to reveal a letter

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The answer for the puzzle "__ fuels; energy sources from ancient organisms" is:
f o s s i l

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