-er a-a a-c aaa aac aad aae aao aar aas aau ac- aca acc acd ace aco acr acs acu ad- ada adc add ade ado adr ads adu aea aec aed aee aeo aer aes aeu aoa aoc aod aoe aoo aor aos aou ar- ara arc ard are aro arr ars aru as- asa asc asd ase aso asr ass asu au- aua auc aud aue auo aur aus c-- caa cac cad cae cao car cas cau cca ccc ccd cce cco ccr ccs ccu cda cdc cdd cde cdo cdr cds cdu ce- cea cec ced cee ceo cer ces ceu co- coa coc cod coe coo cor cos cou cra crc crd cre cro crr crs cru csa csc csd cse cso csr css csu cua cuc cud cue cuo cur cus cuu daa dac dad dae dao dar das dau dca dcc dcd dce dco dcr dcs dcu dda ddc ddd dde ddo ddr dds ddu de- dea dec ded dee deo der des deu doa doc dod doe doo dor dos dou dra drc drd dre dro drr drs dru dsa dsc dsd dse dso dsr dss dsu dua duc dud due duo dur dus eaa eac ead eae eao ear eas eau ec- eca ecc ecd ece eco ecr ecs ecu ed- eda edc edd ede edo edr eds edu eea eec eed eee eeo eer ees eo- eoa eoc eod eoe eoo eor eos eou era erc erd ere ero err ers eru es- esa esc esd ese eso esr ess esu eu- eua euc eud eue eur eus oaa oac oad oae oao oar oas oau oc- oca occ ocd oco ocr ocs ocu oda odc odd ode odo odr ods odu oea oec oed oee oeo oer oes oo- ooa ooc ood ooo oor oos or- ora orc ord ore oro orr ors oru os- osa osc osd ose oso osr oss osu ou- oua ouc oud oue ouo our ous ra- raa rac rad rae rao rar ras rau rca rcc rcd rce rco rcr rcs rcu rda rdc rdd rde rdo rdr rds rdu re- rea rec red ree reo rer res reu roa roc rod roe roo ror ros rou rra rrc rrd rrr rrs rru rsa rsc rsd rse rso rsr rss rsu rua ruc rud rue ruo rur rus ruu saa sac sad sae sao sar sas sau sca scc scd sce sco scr scs scu sda sdc sdd sde sdo sdr sds sdu se- sea sec sed see seo ser ses seu soa soc sod soe soo sor sos sou sr- sra src srd sre sro srr srs ss- ssa ssc ssd sse sso ssr sss ssu sua suc sud sue suo sur sus suu ua- uaa uac uad uae uao uar uas uau uca ucc ucd uce uco ucr ucs ucu uda udc udd ude udo udr uds udu uea uec ued uee uer ues uoa uoc uod uoe uoo uor uos ur- ura urc urd ure uro urr urs uru usa usc usd use uso usr uss usu uua uuc uue uur uus uuu