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