The word Doning is misspelled against Donning, which is present continuous of "Don"
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Donning has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings do & ing which should not be misspelled with single 'N'
Wrong Spelling:  do-n-ing 
Correct Spelling:  do-nn-ing 
Find more incorrect spellings of Donning to spell right way.