Downstram or Downstream: How To spell?

The word Downstram is misspelled against Downstream, an adverb meaning "Down the stream; as, floating downstream."

Downstream has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets downstr & m is misspelled as 'A'
Wrong Spelling:  downstr-a-m 
Correct Spelling:  downstr-ea-m 
Find more incorrect spellings of Downstream to spell right way.

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