Coudexes or Caudexes: How To spell?

The word Coudexes is misspelled against Caudexes, which is plural of "Caudex"

Word contains consecutive vowels 'AU' in between alphabets c & dexes is misspelled as 'OU'
Wrong Spelling:  c-ou-dexes 
Correct Spelling:  c-au-dexes 
Check more misspelled words of Caudexes to spell it correct.

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