The word Mased is misspelled against Massed, which is past tense of "Mass"
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Massed has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings ma & ed which should not be misspelled with single 'S'
Wrong Spelling:  ma-s-ed 
Correct Spelling:  ma-ss-ed 
Explore spell check of Massed to spell without errors.