Cisleathan or Cisleithan: How To spell?

The word Cisleathan is misspelled against Cisleithan, an adjective meaning "On the Austrian side of the river Leitha; Austrian."

Word contains consecutive vowels 'EI' in between alphabets cisl & than is misspelled as 'EA'
Wrong Spelling:  cisl-ea-than 
Correct Spelling:  cisl-ei-than 
Find more wrongly spelled words of Cisleithan to spell it well.