MOUNDBIRDS

bi bo do id in is mi mo mu no nu od oi om on or os si so um un us

bid bin bio bis bod bos bro bud bum bun bur bus dib did dim din dis dom don dor dos dub dud dui dun duo ids ins ion ism mib mid mir mis mob mod mon mor mos mud mun mus nib nim nob nod nom nor nos nub nus obi odd ods oms ons orb ors oud our rib rid rim rin rob rod rom rub rum run sib sim sin sir sob sod som son sou sri sub sum sun udo uns urb urd urn

bids bind bins bios bird biro bods bond born brim brin brio bris bros buds bums bund buns burd burn burs dibs dido dims dino dins doms dons dorm dors doum dour drib drub drum dubs duds dumb duns duos durn duro inro ions iron mibs mids mind mirs miso mobs modi mods mons morn mors muds muni muns muon nibs nims nobs nodi nods noir noms nori norm nous nubs numb nurd obis odds onus orbs ouds ours ribs rids rims rind rins robs rods roms rubs rudd ruin rums runs snib snob snub sorb sord sori sorn sour sudd sumo surd udon udos umbo undo urbs urds urns