SUBARRATION

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

aas aba abo abs ain air ais ait ana ani ant arb ars art baa ban bar bas bat bin bio bis bit boa bos bot bra bro brr bun bur bus but ins ion its nab nib nit nob nor nos not nub nus nut oar oat oba obi ons ora orb ors ort our out rai ran ras rat ria rib rin rob rot rub run rut sab sat sau sib sin sir sit sob son sot sou sri sub sun tab tan tao tar tas tau tin tis ton tor tub tui tun uns urb urn uta uts

abas abos abri abut ains airn airs airt aits anas anis anoa ansa anta anti ants anus arbs aria arts aunt aura auto baas bait bani bans barn bars bast bats bias bins bint bios biro birr bits boar boas boat bora born bort bota bots bout bran bras brat brin brio bris brit bros brut buna buns bunt bura burn burr burs bust buts inro into ions iota iron isba nabs naoi naos nibs nits nobs noir nori nota nous nubs nuts oars oast oats obas obia obis obit onus orbs orra orts osar ours oust outs raia rain rais rani rant rato rats rias ribs rins riot roan roar robs rota roti rots rout rubs ruin runs runt rust ruts sain sari sati snib snit snob snot snub soar soba sora sorb sori sorn sort sour stab star stir stoa stob stub stun suba suit sura tabs tabu tain tans taos tarn taro tars taus tins tiro tons tora tori torn torr tors tour trio tsar tuba tubs tuis tuna tuns turn unai unit unto urbs urns ursa utas