-er a-a a-b aaa aab aae aag aam aan aao aar aau ab- aba abb abe abg abm abn abo abr abu aea aeb aee aeg aem aen aeo aer aeu ag- aga agb age agg agm agn ago agr agu ama amb ame amg amm amn amo amr amu an- ana anb ane ang anm ann ano anr anu aoa aob aoe aog aom aon aoo aor aou ar- ara arb are arg arm arn aro arr aru au- aua aub aue aug aum aun auo aur b-u baa bab bae bag bam ban bao bar bau bba bbb bbe bbg bbm bbn bbo bbr bbu be- bea beb bee beg bem ben beo ber beu bga bgb bge bgg bgm bgn bgo bgr bgu bma bmb bme bmg bmm bmn bmo bmr bmu bna bnb bne bng bnn bno bnr bnu boa bob boe bog bom bon boo bor bou bra brb bre brg brm brn bro brr bru bua bub bue bug bum bun buo bur buu eaa eab eae eag eam ean eao ear eau eba ebb ebe ebg ebm ebn ebo ebr ebu eea eeb eee eeg eem een eeo eer ega egb ege egg egm egn ego egr egu em- ema emb eme emg emm emn emo emr emu en- ena enb ene eng enm enn eno enr enu eo- eoa eob eoe eog eom eon eoo eor eou era erb ere erg erm ern ero err eru eu- eua eub eue eug eun eur gaa gab gae gag gam gan gao gar gau gba gbe gbg gbm gbn gbo gbr gbu ge- gea geb gee geg gem gen geo ger geu gga ggb ggg ggm ggn ggo ggr ggu gma gmb gme gmg gmm gmn gmo gmr gna gnb gne gnm gnn gno gnr gnu goa gob goe gog gom gon goo gor gou gra grb gre grg grm grn gro grr gru gu- gua gub gue gug gum gun guo gur guu m-o m-r maa mab mae mag mam man mao mar mau mba mbb mbe mbg mbm mbo mbr mbu mea meb mee meg mem men meo mer meu mga mgb mge mgm mgn mgo mgr mgu mma mmb mme mmg mmm mmn mmo mmr mmu mna mnb mne mng mnm mnn mno mnr mnu moa mob moe mog mom mon moo mor mou mra mrb mre mrg mrm mrn mro mrr mru mua mub mue mug mum mun mur muu naa nab nae nag nam nan nao nar nau nba nbb nbe nbg nbm nbn nbo nbr nbu ne- nea neb nee neg nem nen neo ner neu nga ngb nge ngg ngm ngn ngo ngu nma nmb nme nmg nmm nmn nmo nmr nmu nna nnb nne nng nnm nnn nno nnu no- noa nob noe nog nom non noo nor nou nra nrb nre nrg nrm nrn nro nrr nru nua nub nue nug num nun nuo nur nuu oaa oab oae oag oam oan oao oar oau ob- oba obb obe obg obm obn obo obr obu oea oeb oee oeg oem oen oeo oer oga oge ogg ogn ogo om- oma omb ome omg omm omn omo omr omu on- ona onb one ong onn ono onr onu oo- ooa oob oog oom oon ooo oor or- ora orb ore org orm orn oro orr oru ou- oua oue oum oun ouo our ra- raa rab rae rag ram ran rao rar rau rba rbb rbe rbg rbm rbn rbo rbr rbu re- rea reb ree reg rem ren reo rer reu rga rgb rge rgg rgn rgo rgr rma rmb rme rmg rmm rmn rmo rmr rna rnb rng rnm rnn rno rnr rnu roa rob roe rog rom ron roo ror rou rra rrb rrg rrm rrn rrr rru rua rub rue rug rum run ruo rur ruu ua- uaa uab uae uag uam uan uao uar uau uba ubb ube ubg ubn ubo ubr ubu uea ueb uee ueg uem uen uer uga ugb uge ugg ugm ugn ugo ugr ugu um- uma umb ume umg umm umn umo umr umu un- una unb une ung unm unn uno unr unu uoa uob uoe uog uom uon uoo uor ur- ura urb ure urg urm urn uro urr uru uua uue uug uum uun uur uuu