PROTOSPASM

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amps apos apps arms arts asps atom atop maps mars mart mass mast mats moas moat moor moos moot mops mora mors mort moss most mots oars oast oats oops oots opts orts osar ossa pams paps pars part pass past pats pomo pomp poms poop poor poos pops port post pots pram prao prat proa prom prop pros psst ramp rams raps rapt rasp rato rats roam romp roms room root rota roto rots samp saps soap soar soma soms soot sops sora sort sots spam spar spas spat spot star stoa stop tamp tams taos taps taro tarp tars tass toms toom topo tops tora toro tors toss tram trap trop tsar