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The first hint to crack the puzzle "__ combustion engine; invented by Étienne Lenoir" is:

It is a word which contains 8 letters

        

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The second hint to crack the puzzle "__ combustion engine; invented by Étienne Lenoir" is:

It starts with letter i

i        

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The third hint to crack the puzzle "__ combustion engine; invented by Étienne Lenoir" is:

It ends with letter l

i        l

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Looking for extra hints for the puzzle "__ combustion engine; invented by Étienne Lenoir"
i        l
Click on any empty tile to reveal a letter

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The answer for the puzzle "__ combustion engine; invented by Étienne Lenoir" is:
i n t e r n a l

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