a-a a-c aaa aac aad aan aar aau ac- aca acc acd acn acr acu ad- ada adc add adn adr adu an- ana anc and ann anr anu ar- ara arc ard arn arr aru au- aua auc aud aun aur c-- caa cac cad can car cau cca ccc ccd ccn ccr ccu cda cdc cdd cdn cdr cdu cn- cna cnc cnd cnn cnr cnu cra crc crd crn crr cru cua cuc cud cun cur cuu daa dac dad dan dar dau dca dcc dcd dcn dcr dcu dda ddc ddd ddn ddr ddu dna dnc dnd dnn dnr dra drc drd drn drr dru dua duc dud dun dur naa nac nad nan nar nau nca ncc ncd ncn ncr ncu nda ndc ndd ndn ndr ndu nna nnc nnn nnu nra nrc nrd nrn nrr nru nua nuc nud nun nur nuu ra- raa rac rad ran rar rau rca rcc rcd rcn rcr rcu rda rdc rdd rdn rdr rdu rna rnc rnd rnn rnr rnu rra rrc rrd rrn rrr rru rua ruc rud run rur ruu ua- uaa uac uad uan uar uau uca ucc ucd ucn ucr ucu uda udc udd udn udr udu un- una unc und unn unr unu ur- ura urc urd urn urr uru uua uuc uun uur uuu