a-a a-b a-c aaa aab aac aae aag aak aan aas aau ab- aba abb abc abe abg abk abn abs abu ac- aca acb acc ace acg ack acn acs acu aea aeb aec aee aeg aek aen aes aeu ag- aga agb agc age agg agk agn ags agu aka akb akc ake akg akk akn aks aku an- ana anb anc ane ang ank ann ans anu as- asa asb asc ase asg ask asn ass asu au- aua aub auc aue aug auk aun aus b-u baa bab bac bae bag bak ban bas bau bba bbb bbc bbe bbg bbk bbn bbs bbu bca bcb bcc bce bcg bck bcn bcs bcu be- bea beb bec bee beg bek ben bes beu bga bgb bgc bge bgg bgk bgn bgs bgu bka bkb bkc bke bkg bkk bkn bks bna bnb bnc bne bng bnk bnn bns bnu bsa bsb bsc bse bsg bsk bsn bss bsu bua bub buc bue bug buk bun bus buu c-- caa cab cac cae cag cak can cas cau cba cbb cbc cbe cbg cbk cbn cbs cbu cca ccb ccc cce ccg cck ccn ccs ccu ce- cea ceb cec cee ceg cek cen ces ceu cga cgb cgc cge cgg cgn cgs cgu cka ckb ckc cks cn- cna cnb cnc cne cng cnn cns cnu csa csb csc cse csg csk csn css csu cua cub cuc cue cug cuk cun cus cuu eaa eab eac eae eag eak ean eas eau eba ebb ebc ebe ebg ebk ebn ebs ebu ec- eca ecb ecc ece ecg eck ecn ecs ecu eea eeb eec eee eeg eek een ees ega egb egc ege egg egn egs egu eka ekb ekc eke ekg eks eku en- ena enb enc ene eng enk enn ens enu es- esa esb esc ese esg esk esn ess esu eu- eua eub euc eue eug eun eus gaa gab gac gae gag gak gan gas gau gba gbc gbe gbg gbk gbn gbs gbu gca gcb gcc gce gcg gck gcn gcs gcu ge- gea geb gec gee geg gek gen ges geu gga ggb ggc ggg ggn ggs ggu gka gkb gkn gks gna gnb gnc gne gnn gns gnu gsa gsb gsc gse gsg gsk gsn gss gsu gu- gua gub guc gue gug guk gun gus guu ka- kaa kab kac kae kag kak kan kas kau kba kbb kbc kbe kbk kbn kbs kbu kca kcb kcc kce kcg kck kcn kcs kcu ke- kea keb kec kee keg kek ken kes kga kgb kgc kgs kgu kkb kkc kke kkk kkn kks kku kn- kna knc kne kng knk knn knu ksa ksb ksc kse ksg ksk ksn kss ksu kub kuc kue kug kuk kun kus kuu naa nab nac nae nag nak nan nas nau nba nbb nbc nbe nbg nbk nbn nbs nbu nca ncb ncc nce ncg nck ncn ncs ncu ne- nea neb nec nee neg nek nen nes neu nga ngb ngc nge ngg ngk ngn ngs ngu nka nkc nke nkk nkn nks nku nna nnb nnc nne nng nnk nnn nns nnu nsa nsb nsc nse nsg nsk nsn nss nsu nua nub nuc nue nug nuk nun nus nuu saa sab sac sae sag sak san sas sau sba sbb sbc sbe sbg sbk sbn sbs sbu sca scb scc sce scg sck scn scs scu se- sea seb sec see seg sek sen ses seu sga sgb sgc sge sgg sgk sgn sgs sgu sk- ska skb skc ske skg skk sks sku sna snb snc sne sng snk snn sns snu ss- ssa ssb ssc sse ssg ssk ssn sss ssu sua sub suc sue sug suk sun sus suu ua- uaa uab uac uae uag uak uan uas uau uba ubb ubc ube ubg ubk ubn ubs ubu uca ucb ucc uce ucg uck ucn ucs ucu uea ueb uec uee ueg uen ues uga ugb ugc uge ugg ugk ugn ugs ugu uka ukb ukc uke ukk ukn uku un- una unb unc une ung unk unn uns unu usa usb usc use usg usk usn uss usu uua uuc uue uug uun uus uuu