SUBSTRACTION

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

abo abs act ain air ais ait ani ant arb arc ars art ass att ban bar bas bat bin bio bis bit boa bos bot bra bro bun bur bus but cab can car cat cis cob con cor cos cot cru cub cur cut ins ion its nab nib nit nob nor nos not nub nus nut oar oat oba obi oca ons ora orb orc ors ort our out rai ran ras rat ria rib rin rob roc rot rub run rut sab sac sat sau sib sic sin sir sis sit sob son sos sot sou sri sub sun tab tan tao tar tas tat tau tic tin tis tit ton tor tot tub tui tun tut uns urb urn uta uts

abos abri abut acts ains airn airs airt aits anis anti ants anus arbs arco arcs arts asci aunt auto bait bani bans barn bars bass bast bats batt bias bins bint bios biro bits bitt boar boas boat bora born bort boss bota bots bott bout bran bras brat brin brio bris brit bros brut buna buns bunt bura burn burs buss bust buts butt cabs cain cans cant carb carn cars cart cast cats ciao cion cist coat cobs coin coir coni cons corn cors coss cost cots crab crib cris crit crus cubs cunt curb curn curs curt cuss cuts icon inro into ions iota iron isba nabs naoi naos narc nibs nits nobs noir nori nota nous nubs nuts oars oast oats obas obia obis obit ocas onus orbs orca orcs orts osar ossa otic ours oust outs rain rais rani rant rato rats rias ribs rins riot roan robs rocs rota roti rots rout rubs ruin runs runt rust ruts sabs sacs sain sans sari sati scab scan scar scat scot scut sibs sics sins sirs sits snib snit snob snot snub soar soba sobs soca sons sora sorb sori sorn sort sots sour sous sris stab star stat stir stoa stob stot stub stun suba subs suit suns sura tabs tabu taco tact tain tans taos tarn taro tars tart tass tats taus taut tics tins tint tiro tits toit tons tora torc tori torn tors tort toss tost tots tour tout trio trot tsar tuba tubs tuis tuna tuns turn tuts unai unci unco unit unto urbs uric urns ursa utas