a-a a-c a-t aaa aac aad aan aat aau ac- aca acc acd acn act acu ad- ada adc add adn adt adu an- ana anc and ann ant anu at- ata atc atd atn att atu au- aua auc aud aun aut c-- caa cac cad can cat cau cca ccc ccd ccn cct ccu cda cdc cdd cdn cdt cdu cn- cna cnc cnd cnn cnt cnu cta ctc ctd ctn ctt ctu cua cuc cud cun cut cuu daa dac dad dan dat dau dca dcc dcd dcn dct dcu dda ddc ddd ddn ddt ddu dna dnc dnd dnn dnt dta dtc dtd dtn dtt dtu dua duc dud dun dut naa nac nad nan nat nau nca ncc ncd ncn nct ncu nda ndc ndd ndn ndt ndu nna nnc nnn nnt nnu nta ntc ntd ntn ntt ntu nua nuc nud nun nut nuu taa tac tad tan tat tau tca tcc tcd tcn tct tcu tda tdc tdd tdn tdt tdu tna tnc tnd tnn tnt tta ttc ttd ttn ttt ttu tua tuc tud tun tut tuu ua- uaa uac uad uan uat uau uca ucc ucd ucn uct ucu uda udc udd udn udt udu un- una unc und unn unt unu uta utc utd utn utt utu uua uuc uun uut uuu