-er c-- ccc cce ccg cck ccm ccr ce- cec cee ceg cek cem cer cgc cge cgg cgm cgr ckc ckm cmc cme cmg cmk cmm cmr crc cre crg crk crm crr ec- ecc ece ecg eck ecm ecr eec eee eeg eek eem eer egc ege egg egm egr ekc eke ekg ekr em- emc eme emg emk emm emr erc ere erg erk erm err gcc gce gcg gck gcm gcr ge- gec gee geg gek gem ger ggc ggg ggm ggr gkm gmc gme gmg gmm gmr grc gre grg grk grm grr kcc kce kcg kck kcm kcr ke- kec kee keg kek kem ker kgc kgm kkc kke kkk kkm kkr kmc kme kmg kmk kmm krc krg krk krr m-r mc- mcc mce mcg mck mcm mcr mec mee meg mek mem mer mgc mge mgk mgm mgr mkc mke mkg mkk mkm mkr mmc mme mmg mmk mmm mmr mrc mre mrg mrk mrm mrr rcc rce rcg rcm rcr re- rec ree reg rek rem rer rgc rge rgg rgk rgr rkc rke rkg rkk rkm rmc rme rmg rmm rmr rrc rrg rrk rrm rrr