a-a a-c a-t aaa aac aad aas aat aau ac- aca acc acd acs act acu ad- ada adc add ads adt adu as- asa asc asd ass ast asu at- ata atc atd ats att atu au- aua auc aud aus aut c-- caa cac cad cas cat cau cca ccc ccd ccs cct ccu cda cdc cdd cds cdt cdu csa csc csd css cst csu cta ctc ctd cts ctt ctu cua cuc cud cus cut cuu daa dac dad das dat dau dca dcc dcd dcs dct dcu dda ddc ddd dds ddt ddu dsa dsc dsd dss dst dsu dta dtc dtd dts dtt dtu dua duc dud dus dut saa sac sad sas sat sau sca scc scd scs sct scu sda sdc sdd sds sdt sdu ss- ssa ssc ssd sss sst ssu sta stc std sts stt stu sua suc sud sus sut suu taa tac tad tas tat tau tca tcc tcd tcs tct tcu tda tdc tdd tds tdt tdu tsa tsc tsd tss tst tsu tta ttc ttd tts ttt ttu tua tuc tud tus tut tuu ua- uaa uac uad uas uat uau uca ucc ucd ucs uct ucu uda udc udd uds udt udu usa usc usd uss ust usu uta utc utd uts utt utu uua uuc uus uut uuu