-er c-- ccc ccd cce ccm cco ccr ccs ccu cdc cdd cde cdm cdo cdr cds cdu ce- cec ced cee cem ceo cer ces ceu cmc cmd cme cmm cmo cmr cms cmu co- coc cod coe com coo cor cos cou crc crd cre crm cro crr crs cru csc csd cse csm cso csr css csu cuc cud cue cum cuo cur cus cuu dcc dcd dce dcm dco dcr dcs dcu ddc ddd dde ddm ddo ddr dds ddu de- dec ded dee dem deo der des deu dmc dmd dme dmm dmo dmr dms dmu doc dod doe dom doo dor dos dou drc drd dre drm dro drr drs dru dsc dsd dse dsm dso dsr dss dsu duc dud due dum duo dur dus ec- ecc ecd ece ecm eco ecr ecs ecu ed- edc edd ede edm edo edr eds edu eec eed eee eem eeo eer ees em- emc emd eme emm emo emr ems emu eo- eoc eod eoe eom eoo eor eos eou erc erd ere erm ero err ers eru es- esc esd ese esm eso esr ess esu eu- euc eud eue eur eus m-o m-r mc- mcc mcd mce mcm mco mcr mcs mcu mdc mdd mde mdm mdo mdr mds mdu mec med mee mem meo mer mes meu mmc mmd mme mmm mmo mmr mms mmu moc mod moe mom moo mor mos mou mrc mrd mre mrm mro mrr mrs mru msc msd mse msm mso msr mss msu muc mud mue mum mur mus muu oc- occ ocd ocm oco ocr ocs ocu odc odd ode odm odo odr ods odu oec oed oee oem oeo oer oes om- omc omd ome omm omo omr oms omu oo- ooc ood oom ooo oor oos or- orc ord ore orm oro orr ors oru os- osc osd ose osm oso osr oss osu ou- ouc oud oue oum ouo our ous rcc rcd rce rcm rco rcr rcs rcu rdc rdd rde rdm rdo rdr rds rdu re- rec red ree rem reo rer res reu rmc rmd rme rmm rmo rmr rms roc rod roe rom roo ror ros rou rrc rrd rrm rrr rrs rru rsc rsd rse rsm rso rsr rss rsu ruc rud rue rum ruo rur rus ruu scc scd sce scm sco scr scs scu sdc sdd sde sdm sdo sdr sds sdu se- sec sed see sem seo ser ses seu smc smd sme smm smo smr sms smu soc sod soe som soo sor sos sou sr- src srd sre srm sro srr srs ss- ssc ssd sse ssm sso ssr sss ssu suc sud sue sum suo sur sus suu ucc ucd uce ucm uco ucr ucs ucu udc udd ude udm udo udr uds udu uec ued uee uem uer ues um- umc umd ume umm umo umr ums umu uoc uod uoe uom uoo uor uos ur- urc urd ure urm uro urr urs uru usc usd use usm uso usr uss usu uuc uue uum uur uus uuu