a-a a-b aaa aab aad aan aao aar aau aay ab- aba abb abd abn abo abr abu aby ad- ada adb add adn ado adr adu ady an- ana anb and ann ano anr anu any aoa aob aod aon aoo aor aou ar- ara arb ard arn aro arr aru ary au- aua aub aud aun auo aur ay- aya ayd ayn ayo ayr ayu b-u baa bab bad ban bao bar bau bay bba bbb bbd bbn bbo bbr bbu bby bda bdb bdd bdo bdr bdu bdy bna bnb bnd bnn bno bnr bnu boa bob bod bon boo bor bou boy bra brb brd brn bro brr bru bry bua bub bud bun buo bur buu buy by- bya byd byn byo byr byu daa dab dad dan dao dar dau day dba dbb dbd dbn dbo dbr dbu dby dda ddb ddd ddn ddo ddr ddu ddy dna dnb dnd dnn dno dnr dny doa dob dod don doo dor dou doy dra drb drd drn dro drr dru dry dua dub dud dun duo dur duy dy- dya dyb dyd dyn dyo dyr dyu dyy naa nab nad nan nao nar nau nay nba nbb nbd nbn nbo nbr nbu nda ndb ndd ndn ndo ndr ndu ndy nna nnb nnn nno nnu no- noa nob nod non noo nor nou noy nra nrb nrd nrn nro nrr nru nry nua nub nud nun nuo nur nuu nuy nya nyd nyn nyo nyu nyy oaa oab oad oan oao oar oau ob- oba obb obd obn obo obr obu oby oda odb odd odn odo odr odu on- ona onb ond onn ono onr onu ony oo- ooa oob ood oon ooo oor or- ora orb ord orn oro orr oru ory ou- oua oud oun ouo our oya oyd oyo ra- raa rab rad ran rao rar rau ray rba rbb rbd rbn rbo rbr rbu rda rdb rdd rdn rdo rdr rdu rdy rna rnb rnd rnn rno rnr rnu rny roa rob rod ron roo ror rou roy rra rrb rrd rrn rrr rru rua rub rud run ruo rur ruu ruy ry- rya ryd ryn ryo ryr ryu ryy ua- uaa uab uad uan uao uar uau uay uba ubb ubn ubo ubr ubu uby uda udb udd udn udo udr udu un- una unb und unn uno unr unu uny uoa uob uod uon uoo uor ur- ura urb urd urn uro urr uru ury uua uun uur uuu uyo uyu yaa yab yad yan yao yar yau yay ybr yby yda ydn ydo ydy yna ynd ynn ynu yny yob yod yon yoo yor you yoy yra yrn yro yru yua yud yun yuo yur yuu yuy yyb yyu yyy