At the aft portion of the index divider are {HEAD ~ two lateral tabs} which project outward and are retained in a vertical groove along {TAIL ~ the right and left sides} of the box 
are retained along
At the aft portion of the index divider are { HEAD ~ two lateral tabs } which project outward and are retained in a vertical groove along { TAIL ~ the right and left sides } of the box
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH