-er a-a a-c aaa aac aad aae aaf aan aar aau ac- aca acc acd ace acf acn acr acu ad- ada adc add ade adf adn adr adu aea aec aed aee aef aen aer aeu af- afa afc afd afe aff afn afr afu an- ana anc and ane anf ann anr anu ar- ara arc ard are arf arn arr aru au- aua auc aud aue auf aun aur c-- caa cac cad cae caf can car cau cca ccc ccd cce ccf ccn ccr ccu cda cdc cdd cde cdf cdn cdr cdu ce- cea cec ced cee cef cen cer ceu cfa cfc cfd cfe cff cfn cfr cfu cn- cna cnc cnd cne cnf cnn cnr cnu cra crc crd cre crf crn crr cru cua cuc cud cue cuf cun cur cuu daa dac dad dae daf dan dar dau dca dcc dcd dce dcf dcn dcr dcu dda ddc ddd dde ddf ddn ddr ddu de- dea dec ded dee def den der deu dfa dfc dfd dfe dff dfn dfr dfu dna dnc dnd dne dnf dnn dnr dra drc drd dre drn drr dru dua duc dud due duf dun dur eaa eac ead eae eaf ean ear eau ec- eca ecc ecd ece ecf ecn ecr ecu ed- eda edc edd ede edf edn edr edu eea eec eed eee eef een eer ef- efa efc efd efe eff efr en- ena enc end ene enf enn enr enu era erc erd ere erf ern err eru eu- eua euc eud eue euf eun eur faa fac fad fae faf fan far fau fca fcc fcd fce fcf fcn fcr fcu fda fdc fdd fde fdf fdn fdr fdu fea fec fed fee fef fen fer feu ffa ffc ffd ffe fff ffn ffr ffu fna fnc fnd fne fnf fnn fnr fnu fra frc frd fre frf frn frr fru fua fud fue fuf fun fur fuu naa nac nad nae naf nan nar nau nca ncc ncd nce ncf ncn ncr ncu nda ndc ndd nde ndf ndn ndr ndu ne- nea nec ned nee nef nen ner neu nfa nfc nfd nfe nff nfn nfr nfu nna nnc nne nnf nnn nnu nra nrc nrd nre nrf nrn nrr nru nua nuc nud nue nun nur nuu ra- raa rac rad rae raf ran rar rau rca rcc rcd rce rcf rcn rcr rcu rda rdc rdd rde rdf rdn rdr rdu re- rea rec red ree ref ren rer reu rfa rfc rfd rfe rff rfn rfr rfu rna rnc rnd rnn rnr rnu rra rrc rrd rrf rrn rrr rru rua ruc rud rue ruf run rur ruu ua- uaa uac uad uae uaf uan uar uau uca ucc ucd uce ucf ucn ucr ucu uda udc udd ude udf udn udr udu uea uec ued uee uef uen uer ufa ufc ufd ufe uff ufn ufr ufu un- una unc und une unf unn unr unu ur- ura urc urd ure urf urn urr uru uua uuc uue uun uur uuu