providing an extrusion die having an inlet portion, an outlet portion, the inlet portion having primary feed holes and secondary feed holes, the outlet portion having a primary slots for forming cross directional cells which communicate with the primary feed holes and secondary associated and intersecting slots for forming {HEAD ~ straight cells} which communicate with {TAIL ~ the secondary feed holes}; and 
providing an extrusion die having an inlet portion , an outlet portion , the inlet portion having primary feed holes and secondary feed holes , the outlet portion having a primary slots for forming cross directional cells which communicate with the primary feed holes and secondary associated and intersecting slots for forming { HEAD ~ straight cells } which communicate with { TAIL ~ the secondary feed holes } ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH