a-a a-b aaa aab aad aag aah aao aar aau ab- aba abb abd abg abh abo abr abu ad- ada adb add adg adh ado adr adu ag- aga agb agd agg agh ago agr agu aha ahb ahd ahg ahh aho ahr ahu aoa aob aod aog aoh aoo aor aou ar- ara arb ard arg arh aro arr aru au- aua aub aud aug auh auo aur b-u baa bab bad bag bah bao bar bau bba bbb bbd bbg bbh bbo bbr bbu bda bdb bdd bdg bdh bdo bdr bdu bga bgb bgd bgg bgh bgo bgr bgu bha bhb bhd bhg bhh bho bhr bhu boa bob bod bog boh boo bor bou bra brb brd brg brh bro brr bru bua bub bud bug buh buo bur buu daa dab dad dag dah dao dar dau dba dbb dbd dbg dbh dbo dbr dbu dda ddb ddd ddg ddh ddo ddr ddu dga dgd dgg dgh dgr dgu dh- dha dhb dhd dhh dho dhr dhu doa dob dod dog doh doo dor dou dra drb drd drg dro drr dru dua dub dud dug duh duo dur g-d gaa gab gad gag gah gao gar gau gba gbd gbg gbh gbo gbr gbu gda gdb gdd gdh gdo gdr gdu gga ggb ggd ggg ggh ggo ggr ggu gha ghb ghd ghg ghh gho ghr goa gob god gog goh goo gor gou gra grb grd grg grh gro grr gru gu- gua gub gud gug guo gur guu haa hab had hag hah hao har hau hba hbb hbd hbg hbh hbo hbr hbu hda hdb hdd hdg hdh hdo hdr hdu hga hgb hgg hgh hgo hgr hgu hha hhb hhd hhg hhh hho hhr hhu hoa hob hod hog hoh hoo hor hou hr- hra hrb hrd hrg hrh hro hrr hru hua hub hud hug huh huo hur huu oaa oab oad oag oah oao oar oau ob- oba obb obd obg obh obo obr obu oda odb odd odg odh odo odr odu oga ogd ogg ogh ogo oha ohd ohg ohh oho ohr ohu oo- ooa oob ood oog ooh ooo oor or- ora orb ord org orh oro orr oru ou- oua oud ouh ouo our ra- raa rab rad rag rah rao rar rau rba rbb rbd rbg rbh rbo rbr rbu rda rdb rdd rdg rdh rdo rdr rdu rga rgb rgd rgg rgh rgo rgr rh- rha rhb rhd rhg rhh rho rhr rhu roa rob rod rog roh roo ror rou rra rrb rrd rrg rrh rrr rru rua rub rud rug ruh ruo rur ruu ua- uaa uab uad uag uah uao uar uau uba ubb ubg ubh ubo ubr ubu uda udb udd udg udo udr udu uga ugb ugg ugh ugo ugr ugu uha uhb uhd uhh uho uhr uhu uoa uob uod uog uoo uor ur- ura urb urd urg uro urr uru uua uug uur uuu