COMBINATORICS

ab ai am an ar as at ba bi bo in is it ma mi mo na no oi om on or os si so ta ti to

abo abs act aim ain air ais ait ami ani ant arb arc arm ars art bam ban bar bas bat bin bio bis bit boa boo bos bot bra bro cab cam can car cat cis cob con coo cor cos cot ins ion ism its mac man mar mas mat mib mic mir mis moa mob moc mon moo mor mos mot nab nam nib nim nit nob nom noo nor nos not oar oat oba obi oca oms ono ons oot ora orb orc ors ort rai ram ran ras rat ria rib rim rin rob roc rom rot sab sac sat sib sic sim sin sir sit sob som son sot sri tab tam tan tao tar tas tic tin tis tom ton too tor

abos abri acts aims ains airn airs airt aits ambo amin amir amis anis anti ants arbs arco arcs arms arts asci atom bait bams bani bans barm barn bars bast bats bias bima bins bint bios biro bits boar boas boat boom boon boor boos boot bora born bort bota bots bran bras brat brim brin brio bris brit broo bros cabs cain camo cams cans cant carb carn cars cart cast cats ciao cion cist coat cobs coca coco coin coir coma comb coni cons coon coos coot corm corn cors cost cots crab cram crib cris crit croc iamb ibis icon inia inro inti into ions iota iris iron isba macs main mair mano mans marc mars mart mast mats mibs mica mics mina mini mint miri mirs miso mist moan moas moat mobs mocs mono mons moon moor moos moot mora morn mors mort most mots nabs naoi naos narc nibs nims nisi nits nobs noir noma noms nori norm nota oars oast oats obas obia obis obit ocas omit onos onto oots orbs orca orcs orts osar otic rain rais rami rams rani rant rato rats rias ribs rims rins riot roam roan robs rocs roms room root rota roti roto rots sain sari sati scab scam scan scar scat scot sima smit snib snit snob snot soar soba soca soma soon soot sora sorb sori sorn sort stab star stir stoa stob tabs taco tain tams tans taos tarn taro tars tics tins tiro tomb toms tons toom toon tora torc tori torn toro tors tram trim trio tsar