-er a-a a-b a-c aaa aab aac aae aag aak aam aan aar aas aau ab- aba abb abc abe abg abk abm abn abr abs abu ac- aca acb acc ace acg ack acm acn acr acs acu aea aeb aec aee aeg aek aem aen aer aes aeu ag- aga agb agc age agg agk agm agn agr ags agu aka akb akc ake akg akk akm akn akr aks aku ama amb amc ame amg amk amm amn amr ams amu an- ana anb anc ane ang ank anm ann anr ans anu ar- ara arb arc are arg ark arm arn arr ars aru as- asa asb asc ase asg ask asm asn asr ass asu au- aua aub auc aue aug auk aum aun aur aus b-u baa bab bac bae bag bak bam ban bar bas bau bba bbb bbc bbe bbg bbk bbm bbn bbr bbs bbu bca bcb bcc bce bcg bck bcm bcn bcr bcs bcu be- bea beb bec bee beg bek bem ben ber bes beu bga bgb bgc bge bgg bgk bgm bgn bgr bgs bgu bka bkb bkc bke bkg bkk bkm bkn bkr bks bma bmb bmc bme bmg bmk bmm bmn bmr bms bmu bna bnb bnc bne bng bnk bnn bnr bns bnu bra brb bre brg brk brm brn brr brs bru bsa bsb bsc bse bsg bsk bsm bsn bsr bss bsu bua bub buc bue bug buk bum bun bur bus buu c-- caa cab cac cae cag cak cam can car cas cau cba cbb cbc cbe cbg cbk cbm cbn cbr cbs cbu cca ccb ccc cce ccg cck ccm ccn ccr ccs ccu ce- cea ceb cec cee ceg cek cem cen cer ces ceu cga cgb cgc cge cgg cgm cgn cgr cgs cgu cka ckb ckc ckm cks cma cmb cmc cme cmg cmk cmm cmn cmr cms cmu cn- cna cnb cnc cne cng cnm cnn cnr cns cnu cra crb crc cre crg crk crm crn crr crs cru csa csb csc cse csg csk csm csn csr css csu cua cub cuc cue cug cuk cum cun cur cus cuu eaa eab eac eae eag eak eam ean ear eas eau eba ebb ebc ebe ebg ebk ebm ebn ebr ebs ebu ec- eca ecb ecc ece ecg eck ecm ecn ecr ecs ecu eea eeb eec eee eeg eek eem een eer ees ega egb egc ege egg egm egn egr egs egu eka ekb ekc eke ekg ekr eks eku em- ema emb emc eme emg emk emm emn emr ems emu en- ena enb enc ene eng enk enm enn enr ens enu era erb erc ere erg erk erm ern err ers eru es- esa esb esc ese esg esk esm esn esr ess esu eu- eua eub euc eue eug eun eur eus gaa gab gac gae gag gak gam gan gar gas gau gba gbc gbe gbg gbk gbm gbn gbr gbs gbu gca gcb gcc gce gcg gck gcm gcn gcr gcs gcu ge- gea geb gec gee geg gek gem gen ger ges geu gga ggb ggc ggg ggm ggn ggr ggs ggu gka gkb gkm gkn gks gma gmb gmc gme gmg gmm gmn gmr gms gna gnb gnc gne gnm gnn gnr gns gnu gra grb grc gre grg grk grm grn grr grs gru gsa gsb gsc gse gsg gsk gsm gsn gsr gss gsu gu- gua gub guc gue gug guk gum gun gur gus guu ka- kaa kab kac kae kag kak kam kan kar kas kau kba kbb kbc kbe kbk kbm kbn kbr kbs kbu kca kcb kcc kce kcg kck kcm kcn kcr kcs kcu ke- kea keb kec kee keg kek kem ken ker kes kga kgb kgc kgm kgs kgu kkb kkc kke kkk kkm kkn kkr kks kku kma kmb kmc kme kmg kmk kmm kms kmu kn- kna knc kne kng knk knm knn knr knu kra krc krg krk krn krr krs kru ksa ksb ksc kse ksg ksk ksm ksn ksr kss ksu kub kuc kue kug kuk kum kun kur kus kuu m-r maa mab mac mae mag mak mam man mar mas mau mba mbb mbc mbe mbg mbk mbm mbr mbs mbu mc- mca mcb mcc mce mcg mck mcm mcn mcr mcs mcu mea meb mec mee meg mek mem men mer mes meu mga mgb mgc mge mgk mgm mgn mgr mgs mgu mka mkb mkc mke mkg mkk mkm mkn mkr mks mku mma mmb mmc mme mmg mmk mmm mmn mmr mms mmu mna mnb mnc mne mng mnk mnm mnn mnr mns mnu mra mrb mrc mre mrg mrk mrm mrn mrr mrs mru msa msb msc mse msg msk msm msn msr mss msu mua mub muc mue mug muk mum mun mur mus muu naa nab nac nae nag nak nam nan nar nas nau nba nbb nbc nbe nbg nbk nbm nbn nbr nbs nbu nca ncb ncc nce ncg nck ncm ncn ncr ncs ncu ne- nea neb nec nee neg nek nem nen ner nes neu nga ngb ngc nge ngg ngk ngm ngn ngs ngu nka nkc nke nkk nkm nkn nkr nks nku nma nmb nmc nme nmg nmk nmm nmn nmr nms nmu nna nnb nnc nne nng nnk nnm nnn nns nnu nra nrb nrc nre nrg nrk nrm nrn nrr nrs nru nsa nsb nsc nse nsg nsk nsm nsn nsr nss nsu nua nub nuc nue nug nuk num nun nur nus nuu ra- raa rab rac rae rag rak ram ran rar ras rau rba rbb rbc rbe rbg rbk rbm rbn rbr rbs rbu rca rcb rcc rce rcg rcm rcn rcr rcs rcu re- rea reb rec ree reg rek rem ren rer res reu rga rgb rgc rge rgg rgk rgn rgr rgs rkb rkc rke rkg rkk