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