The word Hypocleuda is misspelled against Hypocleida, which is plural of "Hypocleidium"
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Word contains consecutive vowels 'EI' in between alphabets hypocl & da is misspelled as 'EU'
Wrong Spelling:  hypocl-eu-da 
Correct Spelling:  hypocl-ei-da 
Check more misspelled words of Hypocleida to spell it correct.