a-a a-c aaa aac aad aao aar aau ac- aca acc acd aco acr acu ad- ada adc add ado adr adu aoa aoc aod aoo aor aou ar- ara arc ard aro arr aru au- aua auc aud auo aur c-- caa cac cad cao car cau cca ccc ccd cco ccr ccu cda cdc cdd cdo cdr cdu co- coa coc cod coo cor cou cra crc crd cro crr cru cua cuc cud cuo cur cuu daa dac dad dao dar dau dca dcc dcd dco dcr dcu dda ddc ddd ddo ddr ddu doa doc dod doo dor dou dra drc drd dro drr dru dua duc dud duo dur oaa oac oad oao oar oau oc- oca occ ocd oco ocr ocu oda odc odd odo odr odu oo- ooa ooc ood ooo oor or- ora orc ord oro orr oru ou- oua ouc oud ouo our ra- raa rac rad rao rar rau rca rcc rcd rco rcr rcu rda rdc rdd rdo rdr rdu roa roc rod roo ror rou rra rrc rrd rrr rru rua ruc rud ruo rur ruu ua- uaa uac uad uao uar uau uca ucc ucd uco ucr ucu uda udc udd udo udr udu uoa uoc uod uoo uor ur- ura urc urd uro urr uru uua uuc uur uuu