-er a-a a-c aaa aac aad aae aag aan aao aar aau ac- aca acc acd ace acg acn aco acr acu ad- ada adc add ade adg adn ado adr adu aea aec aed aee aeg aen aeo aer aeu ag- aga agc agd age agg agn ago agr agu an- ana anc and ane ang ann ano anr anu aoa aoc aod aoe aog aon aoo aor aou ar- ara arc ard are arg arn aro arr aru au- aua auc aud aue aug aun auo aur c-- caa cac cad cae cag can cao car cau cca ccc ccd cce ccg ccn cco ccr ccu cda cdc cdd cde cdg cdn cdo cdr cdu ce- cea cec ced cee ceg cen ceo cer ceu cga cgc cgd cge cgg cgn cgo cgr cgu cn- cna cnc cnd cne cng cnn cno cnr cnu co- coa coc cod coe cog con coo cor cou cra crc crd cre crg crn cro crr cru cua cuc cud cue cug cun cuo cur cuu daa dac dad dae dag dan dao dar dau dca dcc dcd dce dcg dcn dco dcr dcu dda ddc ddd dde ddg ddn ddo ddr ddu de- dea dec ded dee deg den deo der deu dga dgc dgd dge dgg dgn dgr dgu dna dnc dnd dne dng dnn dno dnr doa doc dod doe dog don doo dor dou dra drc drd dre drg drn dro drr dru dua duc dud due dug dun duo dur eaa eac ead eae eag ean eao ear eau ec- eca ecc ecd ece ecg ecn eco ecr ecu ed- eda edc edd ede edg edn edo edr edu eea eec eed eee eeg een eeo eer ega egc egd ege egg egn ego egr egu en- ena enc end ene eng enn eno enr enu eo- eoa eoc eod eoe eog eon eoo eor eou era erc erd ere erg ern ero err eru eu- eua euc eud eue eug eun eur g-d gaa gac gad gae gag gan gao gar gau gca gcc gcd gce gcg gcn gco gcr gcu gda gdc gdd gde gdn gdo gdr gdu ge- gea gec ged gee geg gen geo ger geu gga ggc ggd ggg ggn ggo ggr ggu gna gnc gnd gne gnn gno gnr gnu goa goc god goe gog gon goo gor gou gra grc grd gre grg grn gro grr gru gu- gua guc gud gue gug gun guo gur guu naa nac nad nae nag nan nao nar nau nca ncc ncd nce ncg ncn nco ncr ncu nda ndc ndd nde ndg ndn ndo ndr ndu ne- nea nec ned nee neg nen neo ner neu nga ngc ngd nge ngg ngn ngo ngu nna nnc nne nng nnn nno nnu no- noa noc nod noe nog non noo nor nou nra nrc nrd nre nrg nrn nro nrr nru nua nuc nud nue nug nun nuo nur nuu oaa oac oad oae oag oan oao oar oau oc- oca occ ocd ocg ocn oco ocr ocu oda odc odd ode odg odn odo odr odu oea oec oed oee oeg oen oeo oer oga ogc ogd oge ogg ogn ogo on- ona onc ond one ong onn ono onr onu oo- ooa ooc ood oog oon ooo oor or- ora orc ord ore org orn oro orr oru ou- oua ouc oud oue oun ouo our ra- raa rac rad rae rag ran rao rar rau rca rcc rcd rce rcg rcn rco rcr rcu rda rdc rdd rde rdg rdn rdo rdr rdu re- rea rec red ree reg ren reo rer reu rga rgc rgd rge rgg rgn rgo rgr rna rnc rnd rng rnn rno rnr rnu roa roc rod roe rog ron roo ror rou rra rrc rrd rrg rrn rrr rru rua ruc rud rue rug run ruo rur ruu ua- uaa uac uad uae uag uan uao uar uau uca ucc ucd uce ucg ucn uco ucr ucu uda udc udd ude udg udn udo udr udu uea uec ued uee ueg uen uer uga ugc uge ugg ugn ugo ugr ugu un- una unc und une ung unn uno unr unu uoa uoc uod uoe uog uon uoo uor ur- ura urc urd ure urg urn uro urr uru uua uuc uue uug uun uur uuu