Mistaching or Misteaching: How To spell?

The word Mistaching is misspelled against Misteaching, which is present continuous of "Misteach"

Misteaching has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets mist & ching is misspelled as 'A'
Wrong Spelling:  mist-a-ching 
Correct Spelling:  mist-ea-ching 
Find more wrongly spelled words of Misteaching to spell it well.

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