a-a a-c aaa aac aad aao aas aau ac- aca acc acd aco acs acu ad- ada adc add ado ads adu aoa aoc aod aoo aos aou as- asa asc asd aso ass asu au- aua auc aud auo aus c-- caa cac cad cao cas cau cca ccc ccd cco ccs ccu cda cdc cdd cdo cds cdu co- coa coc cod coo cos cou csa csc csd cso css csu cua cuc cud cuo cus cuu daa dac dad dao das dau dca dcc dcd dco dcs dcu dda ddc ddd ddo dds ddu doa doc dod doo dos dou dsa dsc dsd dso dss dsu dua duc dud duo dus oaa oac oad oao oas oau oc- oca occ ocd oco ocs ocu oda odc odd odo ods odu oo- ooa ooc ood ooo oos os- osa osc osd oso oss osu ou- oua ouc oud ouo ous saa sac sad sao sas sau sca scc scd sco scs scu sda sdc sdd sdo sds sdu soa soc sod soo sos sou ss- ssa ssc ssd sso sss ssu sua suc sud suo sus suu ua- uaa uac uad uao uas uau uca ucc ucd uco ucs ucu uda udc udd udo uds udu uoa uoc uod uoo uos usa usc usd uso uss usu uua uuc uus uuu