{HEAD ~ The system} 13 wherein {TAIL ~ the printhead defect model} is provided tot additional scanning entities 
wherein
{ HEAD ~ The system } 13 wherein { TAIL ~ the printhead defect model } is provided tot additional scanning entities
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH