OBDURATIONS

ab ad ai an ar as at ba bi bo do id in is it na no nu od oi on or os si so ta ti to un us ut

abo abs ado ads aid ain air ais ait and ani ant arb ars art bad ban bar bas bat bid bin bio bis bit boa bod boo bos bot bra bro bud bun bur bus but dab dan dib din dis dit don dor dos dot dub dui dun duo ids ins ion its nab nib nit nob nod noo nor nos not nub nus nut oar oat oba obi oda ods ono ons oot ora orb ors ort oud our out rad rai ran ras rat ria rib rid rin rob rod rot rub run rut sab sad sat sau sib sin sir sit sob sod son sot sou sri sub sun tab tad tan tao tar tas tau tin tis tod ton too tor tub tui tun udo uns urb urd urn uta uts

abos abri abut adit ados aids ains airn airs airt aits ands anis anti ants anus arbs arid arts aunt auto bads bait band bani bans bard barn bars bast bats baud bias bids bind bins bint bios bird biro bits boar boas boat bods bond boon boor boos boot bora born bort bota bots bout brad bran bras brat brin brio bris brit broo bros brut buds buna bund buns bunt bura burd burn burs bust buts dabs dais dans darb darn dart dato daub daut dibs dino dins dint dirt dita dits doat doit dona dons door dors dost dots dour drab drat drib drub dubs duit duns dunt duos dura durn duro dust inro into ions iota iron isba nabs naoi naos nard nibs nits nobs nodi nods noir nori nota nous nubs nurd nuts oars oast oats obas obia obis obit odas odor onos onto onus oots orad orbs ordo orts osar ouds ours oust outs rads raid rain rais rand rani rant rato rats rias ribs rids rind rins riot road roan robs rods rood root rota roti roto rots rout rubs ruin runs runt rust ruts sadi said sain sand sard sari sati snib snit snob snot snub soar soba soda soon soot sora sorb sord sori sorn sort sour stab star stir stoa stob stub stud stun suba suit sura surd tabs tabu tads tain tans taos tarn taro tars taus tins tiro toad tods tons toon tora tori torn toro tors tour trad trio trod tsar tuba tubs tuis tuna tuns turd turn udon udos unai undo unit unto urbs urds urns ursa utas