-er a-a a-c aaa aac aad aae aag aak aan aar aau ac- aca acc acd ace acg ack acn acr acu ad- ada adc add ade adg adk adn adr adu aea aec aed aee aeg aek aen aer aeu ag- aga agc agd age agg agk agn agr agu aka akc akd ake akg akk akn akr aku an- ana anc and ane ang ank ann anr anu ar- ara arc ard are arg ark arn arr aru au- aua auc aud aue aug auk aun aur c-- caa cac cad cae cag cak can car cau cca ccc ccd cce ccg cck ccn ccr ccu cda cdc cdd cde cdg cdk cdn cdr cdu ce- cea cec ced cee ceg cek cen cer ceu cga cgc cgd cge cgg cgn cgr cgu cka ckc ckd cn- cna cnc cnd cne cng cnn cnr cnu cra crc crd cre crg crk crn crr cru cua cuc cud cue cug cuk cun cur cuu daa dac dad dae dag dak dan dar dau dca dcc dcd dce dcg dck dcn dcr dcu dda ddc ddd dde ddg ddk ddn ddr ddu de- dea dec ded dee deg dek den der deu dga dgc dgd dge dgg dgk dgn dgr dgu dka dkc dke dkg dkk dkr dku dna dnc dnd dne dng dnk dnn dnr dra drc drd dre drg drk drn drr dru dua duc dud due dug duk dun dur eaa eac ead eae eag eak ean ear eau ec- eca ecc ecd ece ecg eck ecn ecr ecu ed- eda edc edd ede edg edk edn edr edu eea eec eed eee eeg eek een eer ega egc egd ege egg egn egr egu eka ekc ekd eke ekg ekr eku en- ena enc end ene eng enk enn enr enu era erc erd ere erg erk ern err eru eu- eua euc eud eue eug eun eur g-d gaa gac gad gae gag gak gan gar gau gca gcc gcd gce gcg gck gcn gcr gcu gda gdc gdd gde gdk gdn gdr gdu ge- gea gec ged gee geg gek gen ger geu gga ggc ggd ggg ggn ggr ggu gka gkd gkn gna gnc gnd gne gnn gnr gnu gra grc grd gre grg grk grn grr gru gu- gua guc gud gue gug guk gun gur guu ka- kaa kac kad kae kag kak kan kar kau kca kcc kcd kce kcg kck kcn kcr kcu kda kdc kde kdg kdk kdr kdu ke- kea kec ked kee keg kek ken ker kga kgc kgd kgu kkc kke kkk kkn kkr kku kn- kna knc knd kne kng knk knn knr knu kra krc krd krg krk krn krr kru kuc kud kue kug kuk kun kur kuu naa nac nad nae nag nak nan nar nau nca ncc ncd nce ncg nck ncn ncr ncu nda ndc ndd nde ndg ndk ndn ndr ndu ne- nea nec ned nee neg nek nen ner neu nga ngc ngd nge ngg ngk ngn ngu nka nkc nke nkk nkn nkr nku nna nnc nne nng nnk nnn nnu nra nrc nrd nre nrg nrk nrn nrr nru nua nuc nud nue nug nuk nun nur nuu ra- raa rac rad rae rag rak ran rar rau rca rcc rcd rce rcg rcn rcr rcu rda rdc rdd rde rdg rdn rdr rdu re- rea rec red ree reg rek ren rer reu rga rgc rgd rge rgg rgk rgn rgr rkc rke rkg rkk rku rna rnc rnd rng rnn rnr rnu rra rrc rrd rrg rrk rrn rrr rru rua ruc rud rue rug ruk run rur ruu ua- uaa uac uad uae uag uak uan uar uau uca ucc ucd uce ucg uck ucn ucr ucu uda udc udd ude udg udk udn udr udu uea uec ued uee ueg uen uer uga ugc uge ugg ugk ugn ugr ugu uka ukc uke ukk ukn ukr uku un- una unc und une ung unk unn unr unu ur- ura urc urd ure urg urk urn urr uru uua uuc uue uug uun uur uuu