BRONTOSAURS

ab an ar as at ba bo na no nu on or os so ta to un us ut

abo abs ant arb ars art ass ban bar bas bat boa boo bos bot bra bro brr bun bur bus but nab nob noo nor nos not nub nus nut oar oat oba ono ons oot ora orb ors ort our out ran ras rat rob rot rub run rut sab sat sau sob son sos sot sou sub sun tab tan tao tar tas tau ton too tor tub tun uns urb urn uta uts

abos abut ants anus arbs arts aunt auto bans barn bars bass bast bats boar boas boat boon boor boos boot bora born bort boss bota bots bout bran bras brat broo bros brut buna buns bunt bura burn burr burs buss bust buts nabs naos nobs nota nous nubs nuts oars oast oats obas onos onto onus oots orbs orra orts osar ossa ours oust outs rant rato rats roan roar robs root rota roto rots rout rubs runs runt rust ruts sabs sans snob snot snub soar soba sobs sons soon soot sora sorb sorn sort sots sour sous stab star stoa stob stub stun suba subs suns sura tabs tabu tans taos tarn taro tars tass taus tons toon tora torn toro torr tors toss tour tsar tuba tubs tuna tuns turn unto urbs urns ursa utas