The word Coanex is misspelled against Coannex, a verb meaning "To annex with something else."
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Coannex has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings coa & ex which should not be misspelled with single 'N'
Wrong Spelling:  coa-n-ex 
Correct Spelling:  coa-nn-ex 
Find more incorrect spellings of Coannex to spell right way.