a-a a-c aaa aac aad aaf aan aar aau ac- aca acc acd acf acn acr acu ad- ada adc add adf adn adr adu af- afa afc afd aff afn afr afu an- ana anc and anf ann anr anu ar- ara arc ard arf arn arr aru au- aua auc aud auf aun aur c-- caa cac cad caf can car cau cca ccc ccd ccf ccn ccr ccu cda cdc cdd cdf cdn cdr cdu cfa cfc cfd cff cfn cfr cfu cn- cna cnc cnd cnf cnn cnr cnu cra crc crd crf crn crr cru cua cuc cud cuf cun cur cuu daa dac dad daf dan dar dau dca dcc dcd dcf dcn dcr dcu dda ddc ddd ddf ddn ddr ddu dfa dfc dfd dff dfn dfr dfu dna dnc dnd dnf dnn dnr dra drc drd drn drr dru dua duc dud duf dun dur faa fac fad faf fan far fau fca fcc fcd fcf fcn fcr fcu fda fdc fdd fdf fdn fdr fdu ffa ffc ffd fff ffn ffr ffu fna fnc fnd fnf fnn fnr fnu fra frc frd frf frn frr fru fua fud fuf fun fur fuu naa nac nad naf nan nar nau nca ncc ncd ncf ncn ncr ncu nda ndc ndd ndf ndn ndr ndu nfa nfc nfd nff nfn nfr nfu nna nnc nnf nnn nnu nra nrc nrd nrf nrn nrr nru nua nuc nud nun nur nuu ra- raa rac rad raf ran rar rau rca rcc rcd rcf rcn rcr rcu rda rdc rdd rdf rdn rdr rdu rfa rfc rfd rff rfn rfr rfu rna rnc rnd rnn rnr rnu rra rrc rrd rrf rrn rrr rru rua ruc rud ruf run rur ruu ua- uaa uac uad uaf uan uar uau uca ucc ucd ucf ucn ucr ucu uda udc udd udf udn udr udu ufa ufc ufd uff ufn ufr ufu un- una unc und unf unn unr unu ur- ura urc urd urf urn urr uru uua uuc uun uur uuu