alps also alto altos aport arts atop avos last lats loop loops loos loot loots lops lost lots oaps oars oast oats oops opal opals opts oral orals orlop orlops orts oval ovals pals parol parols pars part parts parvo past pastor patrol patrols pats plat plats plot plots polar polo pols pool pools poor port portal portals ports post postal pots prat prats proa proas pros provost raps rapt rasp rats roast roost root roots rota rotas rots salt salvo salvor savor slap slat sloo sloop slop slot soap soar solar solo soot sora sort spar spat splat spool spoor sport spot sprat star stoa stool stoop stop strap strop taps taro taros tarp tarps tars tool tools topos tops tors torso trap traps troop troops tsar valor valors vapor vapors vast vats volt volta volts