Theform or Theiform: How To spell?

The word Theform is misspelled against Theiform, an adjective meaning "Having the form of tea."

Word contains consecutive vowels 'EI' in between alphabets th & form is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  th-e-form 
Correct Spelling:  th-ei-form 
Find more incorrect spellings of Theiform to spell right way.