-er c-- ccc cce cck ccm ccn ccr ccu ce- cec cee cek cem cen cer ceu ckc ckm cmc cme cmk cmm cmn cmr cmu cn- cnc cne cnm cnn cnr cnu crc cre crk crm crn crr cru cuc cue cuk cum cun cur cuu ec- ecc ece eck ecm ecn ecr ecu eec eee eek eem een eer ekc eke ekr eku em- emc eme emk emm emn emr emu en- enc ene enk enm enn enr enu erc ere erk erm ern err eru eu- euc eue eun eur kcc kce kck kcm kcn kcr kcu ke- kec kee kek kem ken ker kkc kke kkk kkm kkn kkr kku kmc kme kmk kmm kmu kn- knc kne knk knm knn knr knu krc krk krn krr kru kuc kue kuk kum kun kur kuu m-r mc- mcc mce mck mcm mcn mcr mcu mec mee mek mem men mer meu mkc mke mkk mkm mkn mkr mku mmc mme mmk mmm mmn mmr mmu mnc mne mnk mnm mnn mnr mnu mrc mre mrk mrm mrn mrr mru muc mue muk mum mun mur muu ncc nce nck ncm ncn ncr ncu ne- nec nee nek nem nen ner neu nkc nke nkk nkm nkn nkr nku nmc nme nmk nmm nmn nmr nmu nnc nne nnk nnm nnn nnu nrc nre nrk nrm nrn nrr nru nuc nue nuk num nun nur nuu rcc rce rcm rcn rcr rcu re- rec ree rek rem ren rer reu rkc rke rkk rkm rku rmc rme rmm rmn rmr rnc rnm rnn rnr rnu rrc rrk rrm rrn rrr rru ruc rue ruk rum run rur ruu ucc uce uck ucm ucn ucr ucu uec uee uem uen uer ukc uke ukk ukn ukr uku um- umc ume umm umn umr umu un- unc une unk unm unn unr unu ur- urc ure urk urm urn urr uru uuc uue uum uun uur uuu