The word Comenced is misspelled against Commenced, which is past tense of "Commence"
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Commenced has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings co & enced which should not be misspelled with single 'M'
Wrong Spelling:  co-m-enced 
Correct Spelling:  co-mm-enced 
Find more incorrect spellings of Commenced to spell right way.