{HEAD ~ Each} of the partitions has {TAIL ~ hooks} and notches to help hold the assembly together 
{ HEAD ~ Each } of the partitions has { TAIL ~ hooks } and notches to help hold the assembly together
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH