-er c-- ccc ccd cce cck ccm cco ccr ccs ccu cdc cdd cde cdk cdm cdo cdr cds cdu ce- cec ced cee cek cem ceo cer ces ceu ckc ckd ckm cko cks cmc cmd cme cmk cmm cmo cmr cms cmu co- coc cod coe cok com coo cor cos cou crc crd cre crk crm cro crr crs cru csc csd cse csk csm cso csr css csu cuc cud cue cuk cum cuo cur cus cuu dcc dcd dce dck dcm dco dcr dcs dcu ddc ddd dde ddk ddm ddo ddr dds ddu de- dec ded dee dek dem deo der des deu dkc dke dkk dkm dko dkr dks dku dmc dmd dme dmk dmm dmo dmr dms dmu doc dod doe dok dom doo dor dos dou drc drd dre drk drm dro drr drs dru dsc dsd dse dsk dsm dso dsr dss dsu duc dud due duk dum duo dur dus ec- ecc ecd ece eck ecm eco ecr ecs ecu ed- edc edd ede edk edm edo edr eds edu eec eed eee eek eem eeo eer ees ekc ekd eke eko ekr eks eku em- emc emd eme emk emm emo emr ems emu eo- eoc eod eoe eok eom eoo eor eos eou erc erd ere erk erm ero err ers eru es- esc esd ese esk esm eso esr ess esu eu- euc eud eue eur eus kcc kcd kce kck kcm kcr kcs kcu kdc kde kdk kdm kdo kdr kds kdu ke- kec ked kee kek kem keo ker kes kkc kke kkk kkm kkr kks kku kmc kmd kme kmk kmm kmo kms kmu koc kod koe kok kom koo kor kos kou krc krd krk kro krr krs kru ksc ksd kse ksk ksm kso ksr kss ksu kuc kud kue kuk kum kur kus kuu m-o m-r mc- mcc mcd mce mck mcm mco mcr mcs mcu mdc mdd mde mdk mdm mdo mdr mds mdu mec med mee mek mem meo mer mes meu mkc mkd mke mkk mkm mko mkr mks mku mmc mmd mme mmk mmm mmo mmr mms mmu moc mod moe mok mom moo mor mos mou mrc mrd mre mrk mrm mro mrr mrs mru msc msd mse msk msm mso msr mss msu muc mud mue muk mum mur mus muu oc- occ ocd ock ocm oco ocr ocs ocu odc odd ode odm odo odr ods odu oec oed oee oem oeo oer oes okc okd oke okk oko okr oks oku om- omc omd ome omm omo omr oms omu oo- ooc ood ook oom ooo oor oos or- orc ord ore ork orm oro orr ors oru os- osc osd ose osk osm oso osr oss osu ou- ouc oud oue ouk oum ouo our ous rcc rcd rce rcm rco rcr rcs rcu rdc rdd rde rdm rdo rdr rds rdu re- rec red ree rek rem reo rer res reu rkc rke rkk rkm rko rks rku rmc rmd rme rmm rmo rmr rms roc rod roe rok rom roo ror ros rou rrc rrd rrk rrm rrr rrs rru rsc rsd rse rsk rsm rso rsr rss rsu ruc rud rue ruk rum ruo rur rus ruu scc scd sce sck scm sco scr scs scu sdc sdd sde sdk sdm sdo sdr sds sdu se- sec sed see sek sem seo ser ses seu sk- skc skd ske skk skm sko skr sks sku smc smd sme smk smm smo smr sms smu soc sod soe sok som soo sor sos sou sr- src srd sre srk srm sro srr srs ss- ssc ssd sse ssk ssm sso ssr sss ssu suc sud sue suk sum suo sur sus suu ucc ucd uce uck ucm uco ucr ucs ucu udc udd ude udk udm udo udr uds udu uec ued uee uem uer ues ukc uke ukk ukr uku um- umc umd ume umm umo umr ums umu uoc uod uoe uok uom uoo uor uos ur- urc urd ure urk urm uro urr urs uru usc usd use usk usm uso usr uss usu uuc uue uum uur uus uuu