a-a a-c a-t aaa aac aad aar aat aau ac- aca acc acd acr act acu ad- ada adc add adr adt adu ar- ara arc ard arr art aru at- ata atc atd atr att atu au- aua auc aud aur aut c-- caa cac cad car cat cau cca ccc ccd ccr cct ccu cda cdc cdd cdr cdt cdu cra crc crd crr crt cru cta ctc ctd ctr ctt ctu cua cuc cud cur cut cuu daa dac dad dar dat dau dca dcc dcd dcr dct dcu dda ddc ddd ddr ddt ddu dra drc drd drr drt dru dta dtc dtd dtr dtt dtu dua duc dud dur dut ra- raa rac rad rar rat rau rca rcc rcd rcr rct rcu rda rdc rdd rdr rdt rdu rra rrc rrd rrr rrt rru rta rtc rtd rtr rtt rtu rua ruc rud rur rut ruu taa tac tad tar tat tau tca tcc tcd tcr tct tcu tda tdc tdd tdr tdt tdu tra trc trd trr trt tru tta ttc ttd ttr ttt ttu tua tuc tud tur tut tuu ua- uaa uac uad uar uat uau uca ucc ucd ucr uct ucu uda udc udd udr udt udu ur- ura urc urd urr urt uru uta utc utd utr utt utu uua uuc uur uut uuu