PROTOSTOMES

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ems ers ess met moo mop mor mos mot oes oms oot ope ops opt ore ors ort ose per pes pet pom poo pot pro pst rem rep res ret roe rom rot ser set som sop sos sot tet toe tom too top tor tot

epos eros erst mess moor moos moot mope mops more mors mort moss most mote mots mott omer oops oots opes opts ores orts oses otto perm pert peso pest pets poem poet pome pomo poms poor poos pore port pose post pots prom pros psst rems repo reps rest rets roes romp roms room root rope rose rote roto rots sept sers sets sett some soms soot sops sore sort sots spot stem step stet stop stot temp term test tets toes tome toms toom toot tope topo tops tore toro tors tort toss tost tote tots tres tret trop trot