DUOBINARY

ab ad ai an ar ay ba bi bo by do id in na no nu od oi on or oy un ya yo

abo aby ado aid ain air and ani any arb bad ban bar bay bid bin bio boa bod boy bra bro bud bun bur buy dab dan day dib din don dor dry dub dui dun duo ion nab nay nib nob nod nor nub oar oba obi oda ora orb oud our rad rai ran ray ria rib rid rin rob rod rub run rya udo urb urd urn yar yid yin yob yod yon you

abri airn airy arid ayin band bani bard barn baud bind bird biro boar body bond bony bora born brad bran bray brin brio buna bund buoy bura burd burn bury darb darn daub dino doby dona dory dour drab dray drib drub dura durn duro inby inro iron naoi nard nary nodi noir nori nurd obia orad orby raid rain rand rani rind road roan ruby ruin rynd udon unai undo undy yard yarn yaud yird yond yoni your yuan