{HEAD ~ The assembly} 4, wherein {TAIL ~ the cam gear teeth} are of varying shapes and dimensions 
wherein
{ HEAD ~ The assembly } 4 , wherein { TAIL ~ the cam gear teeth } are of varying shapes and dimensions
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH