-er c-- ccc cce ccg ccl ccm ccr ce- cec cee ceg cel cem cer cgc cge cgg cgl cgm cgr cl- clc cle clg cll clm clr cmc cme cmg cml cmm cmr crc cre crg crl crm crr ec- ecc ece ecg ecl ecm ecr eec eee eeg eel eem eer egc ege egg egl egm egr elc ele elg ell elm elr em- emc eme emg eml emm emr erc ere erg erl erm err gcc gce gcg gcl gcm gcr ge- gec gee geg gel gem ger ggc ggg ggm ggr glc gle glg gll glm glr gmc gme gmg gml gmm gmr grc gre grg grl grm grr lcc lce lcg lcl lcm lcr lec lee leg lel lem ler lgc lge lgg lgl lgm lgr llc lle llg lll llm llr lmc lme lmg lml lmm lmr lrc lrg lrm lrr m-r mc- mcc mce mcg mcl mcm mcr mec mee meg mel mem mer mgc mge mgl mgm mgr mlc mle mlg mll mlm mlr mmc mme mmg mml mmm mmr mrc mre mrg mrl mrm mrr rcc rce rcg rcl rcm rcr re- rec ree reg rel rem rer rgc rge rgg rgr rlc rle rlg rll rlm rlr rmc rme rmg rml rmm rmr rrc rrg rrl rrm rrr