POSTORDER

de do ed er es et od oe op or os pe re so to

doe dor dos dot eds err ers ode ods oes oot ope ops opt ore ors ort ose ped per pes pet pod poo pot pro pst red rep res ret rod roe rot ser set sod sop sot ted tod toe too top tor

doer does door dope dore dorp dorr dors dose dost dote dots drop epos eros errs erst odes odor oops oots oped opes opts ordo ores orts peds pert peso pest pets pods poet pood poor poos pore port pose post pots prod pros redo reds repo reps rest rets rode rods roes rood root rope rose rote roto rots sept soot sord sore sort sped spot step stop teds tods toed toes tope topo tops tore toro torr tors tres trod trop