a-a a-c aaa aac aad aar aas aau ac- aca acc acd acr acs acu ad- ada adc add adr ads adu ar- ara arc ard arr ars aru as- asa asc asd asr ass asu au- aua auc aud aur aus c-- caa cac cad car cas cau cca ccc ccd ccr ccs ccu cda cdc cdd cdr cds cdu cra crc crd crr crs cru csa csc csd csr css csu cua cuc cud cur cus cuu daa dac dad dar das dau dca dcc dcd dcr dcs dcu dda ddc ddd ddr dds ddu dra drc drd drr drs dru dsa dsc dsd dsr dss dsu dua duc dud dur dus ra- raa rac rad rar ras rau rca rcc rcd rcr rcs rcu rda rdc rdd rdr rds rdu rra rrc rrd rrr rrs rru rsa rsc rsd rsr rss rsu rua ruc rud rur rus ruu saa sac sad sar sas sau sca scc scd scr scs scu sda sdc sdd sdr sds sdu sr- sra src srd srr srs ss- ssa ssc ssd ssr sss ssu sua suc sud sur sus suu ua- uaa uac uad uar uas uau uca ucc ucd ucr ucs ucu uda udc udd udr uds udu ur- ura urc urd urr urs uru usa usc usd usr uss usu uua uuc uur uus uuu