TUBIPAROUS

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abo abs air ais ait apo apt arb ars art asp bap bar bas bat bio bis bit boa bop bos bot bra bro bur bus but its oar oat oba obi ops opt ora orb ors ort our out par pas pat pia pis pit piu poi pot pro psi pst pub pur pus put rai rap ras rat ria rib rip rob rot rub rut sab sap sat sau sib sip sir sit sob sop sot sou spa sri sub sup tab tao tap tar tas tau tip tis top tor tub tui tup upo ups urb urp uta uts

abos abri abut airs airt aits apos arbs arts atop auto bait baps bars bast bats bias bios biro bits boar boas boat bops bora bort bota bots bout bras brat brio bris brit bros brut bura burp burs bust buts iota isba oars oast oats obas obia obis obit opts opus orbs orts osar ours oust outs pair pars part past pats pias piso pita pits pois port post pots pour pout prao prat prau proa pros ptui pubs puri purs puts rais raps rapt rasp rato rats rias ribs riot rips robs rota roti rots roup rout rubs rust ruts sari sati soap soar soba sora sorb sori sort soup sour spar spat spit spot spur stab star stir stoa stob stop stub suba suit sura tabs tabu taos taps taro tarp tars taus tips tiro topi tops tora tori tors tour trap trio trip trop tsar tuba tubs tuis tups upas urbs urps ursa urus utas