a-a a-b aaa aab aad aag aak aan aar aau ab- aba abb abd abg abk abn abr abu ad- ada adb add adg adk adn adr adu ag- aga agb agd agg agk agn agr agu aka akb akd akg akk akn akr aku an- ana anb and ang ank ann anr anu ar- ara arb ard arg ark arn arr aru au- aua aub aud aug auk aun aur b-u baa bab bad bag bak ban bar bau bba bbb bbd bbg bbk bbn bbr bbu bda bdb bdd bdg bdk bdr bdu bga bgb bgd bgg bgk bgn bgr bgu bka bkb bkg bkk bkn bkr bna bnb bnd bng bnk bnn bnr bnu bra brb brd brg brk brn brr bru bua bub bud bug buk bun bur buu daa dab dad dag dak dan dar dau dba dbb dbd dbg dbk dbn dbr dbu dda ddb ddd ddg ddk ddn ddr ddu dga dgd dgg dgk dgn dgr dgu dka dkb dkg dkk dkr dku dna dnb dnd dng dnk dnn dnr dra drb drd drg drk drn drr dru dua dub dud dug duk dun dur g-d gaa gab gad gag gak gan gar gau gba gbd gbg gbk gbn gbr gbu gda gdb gdd gdk gdn gdr gdu gga ggb ggd ggg ggn ggr ggu gka gkb gkd gkn gna gnb gnd gnn gnr gnu gra grb grd grg grk grn grr gru gu- gua gub gud gug guk gun gur guu ka- kaa kab kad kag kak kan kar kau kba kbb kbd kbk kbn kbr kbu kda kdb kdg kdk kdr kdu kga kgb kgd kgu kkb kkk kkn kkr kku kn- kna knd kng knk knn knr knu kra krd krg krk krn krr kru kub kud kug kuk kun kur kuu naa nab nad nag nak nan nar nau nba nbb nbd nbg nbk nbn nbr nbu nda ndb ndd ndg ndk ndn ndr ndu nga ngb ngd ngg ngk ngn ngu nka nkk nkn nkr nku nna nnb nng nnk nnn nnu nra nrb nrd nrg nrk nrn nrr nru nua nub nud nug nuk nun nur nuu ra- raa rab rad rag rak ran rar rau rba rbb rbd rbg rbk rbn rbr rbu rda rdb rdd rdg rdn rdr rdu rga rgb rgd rgg rgk rgn rgr rkb rkg rkk rku rna rnb rnd rng rnn rnr rnu rra rrb rrd rrg rrk rrn rrr rru rua rub rud rug ruk run rur ruu ua- uaa uab uad uag uak uan uar uau uba ubb ubg ubk ubn ubr ubu uda udb udd udg udk udn udr udu uga ugb ugg ugk ugn ugr ugu uka ukb ukk ukn ukr uku un- una unb und ung unk unn unr unu ur- ura urb urd urg urk urn urr uru uua uug uun uur uuu