-er c-- ccc cce ccg ccn ccr ccu ce- cec cee ceg cen cer ceu cgc cge cgg cgn cgr cgu cn- cnc cne cng cnn cnr cnu crc cre crg crn crr cru cuc cue cug cun cur cuu ec- ecc ece ecg ecn ecr ecu eec eee eeg een eer egc ege egg egn egr egu en- enc ene eng enn enr enu erc ere erg ern err eru eu- euc eue eug eun eur gcc gce gcg gcn gcr gcu ge- gec gee geg gen ger geu ggc ggg ggn ggr ggu gnc gne gnn gnr gnu grc gre grg grn grr gru gu- guc gue gug gun gur guu ncc nce ncg ncn ncr ncu ne- nec nee neg nen ner neu ngc nge ngg ngn ngu nnc nne nng nnn nnu nrc nre nrg nrn nrr nru nuc nue nug nun nur nuu rcc rce rcg rcn rcr rcu re- rec ree reg ren rer reu rgc rge rgg rgn rgr rnc rng rnn rnr rnu rrc rrg rrn rrr rru ruc rue rug run rur ruu ucc uce ucg ucn ucr ucu uec uee ueg uen uer ugc uge ugg ugn ugr ugu un- unc une ung unn unr unu ur- urc ure urg urn urr uru uuc uue uug uun uur uuu