-er c-- ccc ccd cce cck ccm ccr ccu cdc cdd cde cdk cdm cdr cdu ce- cec ced cee cek cem cer ceu ckc ckd ckm cmc cmd cme cmk cmm cmr cmu crc crd cre crk crm crr cru cuc cud cue cuk cum cur cuu dcc dcd dce dck dcm dcr dcu ddc ddd dde ddk ddm ddr ddu de- dec ded dee dek dem der deu dkc dke dkk dkm dkr dku dmc dmd dme dmk dmm dmr dmu drc drd dre drk drm drr dru duc dud due duk dum dur ec- ecc ecd ece eck ecm ecr ecu ed- edc edd ede edk edm edr edu eec eed eee eek eem eer ekc ekd eke ekr eku em- emc emd eme emk emm emr emu erc erd ere erk erm err eru eu- euc eud eue eur kcc kcd kce kck kcm kcr kcu kdc kde kdk kdm kdr kdu ke- kec ked kee kek kem ker kkc kke kkk kkm kkr kku kmc kmd kme kmk kmm kmu krc krd krk krr kru kuc kud kue kuk kum kur kuu m-r mc- mcc mcd mce mck mcm mcr mcu mdc mdd mde mdk mdm mdr mdu mec med mee mek mem mer meu mkc mkd mke mkk mkm mkr mku mmc mmd mme mmk mmm mmr mmu mrc mrd mre mrk mrm mrr mru muc mud mue muk mum mur muu rcc rcd rce rcm rcr rcu rdc rdd rde rdm rdr rdu re- rec red ree rek rem rer reu rkc rke rkk rkm rku rmc rmd rme rmm rmr rrc rrd rrk rrm rrr rru ruc rud rue ruk rum rur ruu ucc ucd uce uck ucm ucr ucu udc udd ude udk udm udr udu uec ued uee uem uer ukc uke ukk ukr uku um- umc umd ume umm umr umu ur- urc urd ure urk urm urr uru uuc uue uum uur uuu