-er c-- ccc cce ccg ccm ccn cco ccr ce- cec cee ceg cem cen ceo cer cgc cge cgg cgm cgn cgo cgr cmc cme cmg cmm cmn cmo cmr cn- cnc cne cng cnm cnn cno cnr co- coc coe cog com con coo cor crc cre crg crm crn cro crr ec- ecc ece ecg ecm ecn eco ecr eec eee eeg eem een eeo eer egc ege egg egm egn ego egr em- emc eme emg emm emn emo emr en- enc ene eng enm enn eno enr eo- eoc eoe eog eom eon eoo eor erc ere erg erm ern ero err gcc gce gcg gcm gcn gco gcr ge- gec gee geg gem gen geo ger ggc ggg ggm ggn ggo ggr gmc gme gmg gmm gmn gmo gmr gnc gne gnm gnn gno gnr goc goe gog gom gon goo gor grc gre grg grm grn gro grr m-o m-r mc- mcc mce mcg mcm mcn mco mcr mec mee meg mem men meo mer mgc mge mgm mgn mgo mgr mmc mme mmg mmm mmn mmo mmr mnc mne mng mnm mnn mno mnr moc moe mog mom mon moo mor mrc mre mrg mrm mrn mro mrr ncc nce ncg ncm ncn nco ncr ne- nec nee neg nem nen neo ner ngc nge ngg ngm ngn ngo nmc nme nmg nmm nmn nmo nmr nnc nne nng nnm nnn nno no- noc noe nog nom non noo nor nrc nre nrg nrm nrn nro nrr oc- occ ocg ocm ocn oco ocr oec oee oeg oem oen oeo oer ogc oge ogg ogn ogo om- omc ome omg omm omn omo omr on- onc one ong onn ono onr oo- ooc oog oom oon ooo oor or- orc ore org orm orn oro orr rcc rce rcg rcm rcn rco rcr re- rec ree reg rem ren reo rer rgc rge rgg rgn rgo rgr rmc rme rmg rmm rmn rmo rmr rnc rng rnm rnn rno rnr roc roe rog rom ron roo ror rrc rrg rrm rrn rrr