a-a a-b aaa aab aad aag aah aar aau ab- aba abb abd abg abh abr abu ad- ada adb add adg adh adr adu ag- aga agb agd agg agh agr agu aha ahb ahd ahg ahh ahr ahu ar- ara arb ard arg arh arr aru au- aua aub aud aug auh aur b-u baa bab bad bag bah bar bau bba bbb bbd bbg bbh bbr bbu bda bdb bdd bdg bdh bdr bdu bga bgb bgd bgg bgh bgr bgu bha bhb bhd bhg bhh bhr bhu bra brb brd brg brh brr bru bua bub bud bug buh bur buu daa dab dad dag dah dar dau dba dbb dbd dbg dbh dbr dbu dda ddb ddd ddg ddh ddr ddu dga dgd dgg dgh dgr dgu dh- dha dhb dhd dhh dhr dhu dra drb drd drg drr dru dua dub dud dug duh dur g-d gaa gab gad gag gah gar gau gba gbd gbg gbh gbr gbu gda gdb gdd gdh gdr gdu gga ggb ggd ggg ggh ggr ggu gha ghb ghd ghg ghh ghr gra grb grd grg grh grr gru gu- gua gub gud gug gur guu haa hab had hag hah har hau hba hbb hbd hbg hbh hbr hbu hda hdb hdd hdg hdh hdr hdu hga hgb hgg hgh hgr hgu hha hhb hhd hhg hhh hhr hhu hr- hra hrb hrd hrg hrh hrr hru hua hub hud hug huh hur huu ra- raa rab rad rag rah rar rau rba rbb rbd rbg rbh rbr rbu rda rdb rdd rdg rdh rdr rdu rga rgb rgd rgg rgh rgr rh- rha rhb rhd rhg rhh rhr rhu rra rrb rrd rrg rrh rrr rru rua rub rud rug ruh rur ruu ua- uaa uab uad uag uah uar uau uba ubb ubg ubh ubr ubu uda udb udd udg udr udu uga ugb ugg ugh ugr ugu uha uhb uhd uhh uhr uhu ur- ura urb urd urg urr uru uua uug uur uuu