However, if the referenced object does not understand the message sent, then the remaining alternate dispatch variables are searched for a determination of whether these other alternate dispatch variables may contain {HEAD ~ values} referencing {TAIL ~ other objects} to be tested for fulfillment of the method requirements of the message sent 
However , if the referenced object does not understand the message sent , then the remaining alternate dispatch variables are searched for a determination of whether these other alternate dispatch variables may contain { HEAD ~ values } referencing { TAIL ~ other objects } to be tested for fulfillment of the method requirements of the message sent
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