PROTOAVIS

ai ar as at is it oi op or os pa pi si so ta ti to

air ais ait apo apt ars art asp avo its oar oat oot ops opt ora ors ort ova par pas pat pia pis pit poi poo pot pro psi pst rai rap ras rat ria rip rot sap sat sip sir sit sop sot spa sri tao tap tar tas tav tip tis too top tor var vas vat via vis

airs airt aits apos arts arvo atop avos iota oars oast oats oops oots opts orts osar pair pars part past pats pias piso pita pits pois poor poos port post pots prao prat proa pros rais raps rapt rasp rato rats rias riot rips root rota roti roto rots sari sati soap soar soot sora sori sort spar spat spit spiv spot star stir stoa stop taos taps taro tarp tars tavs tips tiro topi topo tops tora tori toro tors trap trio trip trop tsar vair vars vast vats visa vita