COMPULSATORY

al am ar as at ay la lo ma mo mu my om op or os oy pa so ta to um up us ut ya yo

act alp als alt amp amu apo apt arc arm ars art asp ays cam cap car cat cay col coo cop cor cos cot coy cru cry cum cup cur cut lac lam lap lar las lat lay loo lop lot lum mac map mar mas mat may moa moc mol moo mop mor mos mot mus mut myc oar oat oca oms oot ops opt ora orc ors ort our out pac pal pam par pas pat pay ply pol pom poo pot pro pry pst pul pur pus put pya ram rap ras rat ray roc rom rot rum rut rya sac sal sap sat sau say sly sol som sop sot sou soy spa spy sty sum sup tam tao tap tar tas tau tom too top tor toy try tup ump upo ups urp uta uts yam yap yar yom you yum yup

acts acyl alms alps also alto alts alum amps amus amyl apos arco arcs arms army arts arty arum aryl atom atop auto calm calo camo camp cams capo caps carl carp cars cart cast cats caul cays clam clap clay clop clot cloy coal coat cola cols colt coly coma comp cool coop coos coot cops copy corm cors cory cost cosy cots coup coys cram crap crop crus culm cult cups curl curs curt cusp cuts cyma cyst lacs lacy lamp lams laps lars last lats latu lays loam loca loco loom loop loos loot lops lory lost lota lots loup lour lout luma lump lums lust macs malt maps marc marl mars mart mast mats maul maut mayo mays moas moat mocs mola mols molt moly mool moor moos moot mops mopy mora mors mort most mots mura must muts mycs oars oast oats ocas oops oots opal opts opus oral orca orcs orts osar ours oust outs pacs pact pacy palm pals paly pams pars part past pats paty pays plat play plot ploy plum plus poco polo pols poly pomo poms pool poor poos port post posy pots pour pout pram prao prat prau pray proa prom pros pula puls puma purl purs puts pyas pyro racy ramp rams raps rapt rasp rato rats rays roam rocs romp roms room root ropy rosy rota rotl roto rots roup rout ruly rump rums rust ruts ryas ryot salp salt samp saul scam scar scat scop scot scry scum scup scut slam slap slat slay slop slot slum slur slut smut soap soar soca sola solo soma soot sora sort soul soup sour soya spam spar spat spay spot spry spur star stay stoa stop stum sumo sump sura taco talc tamp tams taos taps taro tarp tars taus tola tolu toms tool toom topo tops tora torc toro tors tory tour toyo toys tram trap tray trop troy tsar tump tups typo tyro umps upas urps ursa utas yams yaps yaup your yous yuca yups yurt