a-a a-b aaa aab aad aan aao aar aau aaw ab- aba abb abd abn abo abr abu abw ad- ada adb add adn ado adr adu adw an- ana anb and ann ano anr anu aoa aob aod aon aoo aor aou aow ar- ara arb ard arn aro arr aru arw au- aua aub aud aun auo aur auw aw- awa awb awd awn awo awr awu aww b-u baa bab bad ban bao bar bau baw bba bbb bbd bbn bbo bbr bbu bbw bda bdb bdd bdo bdr bdu bdw bna bnb bnd bnn bno bnr bnu bnw boa bob bod bon boo bor bou bow bra brb brd brn bro brr bru brw bua bub bud bun buo bur buu buw bwa bwb bwd bwo bwr bwu daa dab dad dan dao dar dau daw dba dbb dbd dbn dbo dbr dbu dda ddb ddd ddn ddo ddr ddu ddw dna dnb dnd dnn dno dnr dnw doa dob dod don doo dor dou dow dra drb drd drn dro drr dru drw dua dub dud dun duo dur dwa dwb dwn dwo dwr dwu dww naa nab nad nan nao nar nau naw nba nbb nbd nbn nbo nbr nbu nbw nda ndb ndd ndn ndo ndr ndu nna nnb nnn nno nnu nnw no- noa nob nod non noo nor nou now nra nrb nrd nrn nro nrr nru nrw nua nub nud nun nuo nur nuu nwa nwb nwd nwn nwo nwr nwu oaa oab oad oan oao oar oau oaw ob- oba obb obd obn obo obr obu obw oda odb odd odn odo odr odu on- ona onb ond onn ono onr onu oo- ooa oob ood oon ooo oor oow or- ora orb ord orn oro orr oru ou- oua oud oun ouo our owa owb owd own owo owu oww ra- raa rab rad ran rao rar rau raw rba rbb rbd rbn rbo rbr rbu rbw rda rdb rdd rdn rdo rdr rdu rna rnb rnd rnn rno rnr rnu rnw roa rob rod ron roo ror rou row rra rrb rrd rrn rrr rru rua rub rud run ruo rur ruu rwa rwb rwd rwr rwu ua- uaa uab uad uan uao uar uau uaw uba ubb ubn ubo ubr ubu ubw uda udb udd udn udo udr udu un- una unb und unn uno unr unu unw uoa uob uod uon uoo uor uow ur- ura urb urd urn uro urr uru urw uua uun uur uuu uwa uwb uwn uwr uww waa wab wad wan wao war wau waw wba wbb wbd wbn wbo wbr wbw wda wdb wdr wdu wn- wna wnd wnn wno wnu wnw woa wob wod won woo wor wou wow wr- wra wrd wrn wro wrr wru wrw wua wub wud wun wuo wur wwa wwd wwn wwo wwu www