The word Witnesed is misspelled against Witnessed, which is past tense of "Witness"
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Witnessed has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings witne & ed which should not be misspelled with single 'S'
Wrong Spelling:  witne-s-ed 
Correct Spelling:  witne-ss-ed 
Find more wrongly spelled words of Witnessed to spell it well.