-er a-a a-c aaa aac aad aae aan aar aau ac- aca acc acd ace acn acr acu ad- ada adc add ade adn adr adu aea aec aed aee aen aer aeu an- ana anc and ane ann anr anu ar- ara arc ard are arn arr aru au- aua auc aud aue aun aur c-- caa cac cad cae can car cau cca ccc ccd cce ccn ccr ccu cda cdc cdd cde cdn cdr cdu ce- cea cec ced cee cen cer ceu cn- cna cnc cnd cne cnn cnr cnu cra crc crd cre crn crr cru cua cuc cud cue cun cur cuu daa dac dad dae dan dar dau dca dcc dcd dce dcn dcr dcu dda ddc ddd dde ddn ddr ddu de- dea dec ded dee den der deu dna dnc dnd dne dnn dnr dra drc drd dre drn drr dru dua duc dud due dun dur eaa eac ead eae ean ear eau ec- eca ecc ecd ece ecn ecr ecu ed- eda edc edd ede edn edr edu eea eec eed eee een eer en- ena enc end ene enn enr enu era erc erd ere ern err eru eu- eua euc eud eue eun eur naa nac nad nae nan nar nau nca ncc ncd nce ncn ncr ncu nda ndc ndd nde ndn ndr ndu ne- nea nec ned nee nen ner neu nna nnc nne nnn nnu nra nrc nrd nre nrn nrr nru nua nuc nud nue nun nur nuu ra- raa rac rad rae ran rar rau rca rcc rcd rce rcn rcr rcu rda rdc rdd rde rdn rdr rdu re- rea rec red ree ren rer reu rna rnc rnd rnn rnr rnu rra rrc rrd rrn rrr rru rua ruc rud rue run rur ruu ua- uaa uac uad uae uan uar uau uca ucc ucd uce ucn ucr ucu uda udc udd ude udn udr udu uea uec ued uee uen uer un- una unc und une unn unr unu ur- ura urc urd ure urn urr uru uua uuc uue uun uur uuu