a-a a-c aaa aac aad aaf aao aar aas aau ac- aca acc acd acf aco acr acs acu ad- ada adc add adf ado adr ads adu af- afa afc afd aff afo afr afs afu aoa aoc aod aof aoo aor aos aou ar- ara arc ard arf aro arr ars aru as- asa asc asd asf aso asr ass asu au- aua auc aud auf auo aur aus c-- caa cac cad caf cao car cas cau cca ccc ccd ccf cco ccr ccs ccu cda cdc cdd cdf cdo cdr cds cdu cfa cfc cfd cff cfo cfr cfs cfu co- coa coc cod cof coo cor cos cou cra crc crd crf cro crr crs cru csa csc csd csf cso csr css csu cua cuc cud cuf cuo cur cus cuu daa dac dad daf dao dar das dau dca dcc dcd dcf dco dcr dcs dcu dda ddc ddd ddf ddo ddr dds ddu dfa dfc dfd dff dfo dfr dfs dfu doa doc dod dof doo dor dos dou dra drc drd dro drr drs dru dsa dsc dsd dsf dso dsr dss dsu dua duc dud duf duo dur dus faa fac fad faf fao far fas fau fca fcc fcd fcf fco fcr fcs fcu fda fdc fdd fdf fdo fdr fds fdu ffa ffc ffd fff ffo ffr ffs ffu foa foc fof foo for fos fou fra frc frd frf fro frr frs fru fsa fsc fsd fsf fso fsr fss fsu fua fud fuf fuo fur fus fuu oaa oac oad oaf oao oar oas oau oc- oca occ ocd ocf oco ocr ocs ocu oda odc odd odf odo odr ods odu of- ofa ofc ofd off ofo ofr ofs ofu oo- ooa ooc ood oof ooo oor oos or- ora orc ord orf oro orr ors oru os- osa osc osd osf oso osr oss osu ou- oua ouc oud ouf ouo our ous ra- raa rac rad raf rao rar ras rau rca rcc rcd rcf rco rcr rcs rcu rda rdc rdd rdf rdo rdr rds rdu rfa rfc rfd rff rfo rfr rfs rfu roa roc rod rof roo ror ros rou rra rrc rrd rrf rrr rrs rru rsa rsc rsd rsf rso rsr rss rsu rua ruc rud ruf ruo rur rus ruu saa sac sad saf sao sar sas sau sca scc scd scf sco scr scs scu sda sdc sdd sdf sdo sdr sds sdu sfa sfc sfd sff sfo sfr sfs sfu soa soc sod sof soo sor sos sou sr- sra src srd srf sro srr srs ss- ssa ssc ssd ssf sso ssr sss ssu sua suc sud suf suo sur sus suu ua- uaa uac uad uaf uao uar uas uau uca ucc ucd ucf uco ucr ucs ucu uda udc udd udf udo udr uds udu ufa ufc ufd uff ufo ufr ufs ufu uoa uoc uod uoo uor uos ur- ura urc urd urf uro urr urs uru usa usc usd usf uso usr uss usu uua uuc uur uus uuu