-er -ic a-a a-c a-i aaa aac aae aag aai aan aar aas ac- aca acc ace acg aci acn acr acs aea aec aee aeg aei aen aer aes ag- aga agc age agg agi agn agr ags ai- aia aic aie aig aii ain air ais an- ana anc ane ang ani ann anr ans ar- ara arc are arg ari arn arr ars as- asa asc ase asg asi asn asr ass c-- caa cac cae cag cai can car cas cca ccc cce ccg cci ccn ccr ccs ce- cea cec cee ceg cei cen cer ces cga cgc cge cgg cgi cgn cgr cgs ci- cia cic cie cig cii cin cir cis cn- cna cnc cne cng cni cnn cnr cns cra crc cre crg cri crn crr crs csa csc cse csg csi csn csr css eaa eac eae eag eai ean ear eas ec- eca ecc ece ecg eci ecn ecr ecs eea eec eee eeg een eer ees ega egc ege egg egi egn egr egs eia eic eie eig eii ein eir eis en- ena enc ene eng eni enn enr ens era erc ere erg eri ern err ers es- esa esc ese esg esi esn esr ess gaa gac gae gag gai gan gar gas gca gcc gce gcg gci gcn gcr gcs ge- gea gec gee geg gei gen ger ges gga ggc ggg ggi ggn ggr ggs gia gic gie gig gii gin gir gis gna gnc gne gni gnn gnr gns gra grc gre grg gri grn grr grs gsa gsc gse gsg gsi gsn gsr gss ia- iaa iac iae iag iai ian iar ias ica icc ice icg ici icn icr ics ie- iea iec iee ieg iei ien ier ies iga igc ige igg igi ign igr igs iia iic iie iii iin iir iis in- ina inc ine ing ini inn inr ins ir- ira irc ire irg iri irn irr irs is- isa isc ise isg isi isn isr iss n-i naa nac nae nag nai nan nar nas nca ncc nce ncg nci ncn ncr ncs ne- nea nec nee neg nei nen ner nes nga ngc nge ngg ngi ngn ngs nia nic nie nig nii nin nir nis nna nnc nne nng nni nnn nns nra nrc nre nrg nri nrn nrr nrs nsa nsc nse nsg nsi nsn nsr nss ra- raa rac rae rag rai ran rar ras rca rcc rce rcg rci rcn rcr rcs re- rea rec ree reg rei ren rer res rga rgc rge rgg rgi rgn rgr rgs ria ric rie rig rii rin rir ris rna rnc rng rni rnn rnr rns rra rrc rrg rri rrn rrr rrs rsa rsc rse rsg rsi rsn rsr rss saa sac sae sag sai san sar sas sca scc sce scg sci scn scr scs se- sea sec see seg sei sen ser ses sga sgc sge sgg sgi sgn sgr sgs sia sic sie sig sii sin sir sis sna snc sne sng sni snn snr sns sr- sra src sre srg sri srn srr srs ss- ssa ssc sse ssg ssi ssn ssr sss