-er -ic a-a a-c a-i aaa aac aae aag aah aai aar aas ac- aca acc ace acg ach aci acr acs aea aec aee aeg aeh aei aer aes ag- aga agc age agg agh agi agr ags aha ahc ahe ahg ahh ahi ahr ahs ai- aia aic aie aig aih aii air ais ar- ara arc are arg arh ari arr ars as- asa asc ase asg ash asi asr ass c-- caa cac cae cag cah cai car cas cca ccc cce ccg cch cci ccr ccs ce- cea cec cee ceg ceh cei cer ces cga cgc cge cgg cgh cgi cgr cgs ch- cha chc che chg chh chi chr chs ci- cia cic cie cig cih cii cir cis cra crc cre crg crh cri crr crs csa csc cse csg csh csi csr css eaa eac eae eag eah eai ear eas ec- eca ecc ece ecg ech eci ecr ecs eea eec eee eeg eer ees ega egc ege egg egh egi egr egs eha ehc ehe ehg ehh ehi ehr ehs eia eic eie eig eii eir eis era erc ere erg erh eri err ers es- esa esc ese esg esh esi esr ess gaa gac gae gag gah gai gar gas gca gcc gce gcg gch gci gcr gcs ge- gea gec gee geg geh gei ger ges gga ggc ggg ggh ggi ggr ggs gha ghc ghe ghg ghh ghi ghr ghs gia gic gie gig gih gii gir gis gra grc gre grg grh gri grr grs gsa gsc gse gsg gsi gsr gss h-i haa hac hae hag hah hai har has hca hcc hce hcg hch hci hcr hcs he- hea hec hee heg heh hei her hes hga hgc hge hgg hgh hgi hgr hgs hha hhc hhe hhg hhh hhi hhr hhs hia hic hie hig hih hii hir his hr- hra hrc hre hrg hrh hri hrr hrs hsa hsc hse hsg hsh hsi hsr hss ia- iaa iac iae iag iah iai iar ias ica icc ice icg ich ici icr ics ie- iea iec iee ieg iei ier ies iga igc ige igg igh igi igr igs iha ihc ihe ihg ihh ihi ihr ihs iia iic iie iih iii iir iis ir- ira irc ire irg iri irr irs is- isa isc ise isg ish isi isr iss ra- raa rac rae rag rah rai rar ras rca rcc rce rcg rch rci rcr rcs re- rea rec ree reg reh rei rer res rga rgc rge rgg rgh rgi rgr rgs rh- rha rhc rhe rhg rhh rhi rhr rhs ria ric rie rig rih rii rir ris rra rrc rrg rrh rri rrr rrs rsa rsc rse rsg rsh rsi rsr rss saa sac sae sag sah sai sar sas sca scc sce scg sch sci scr scs se- sea sec see seg seh sei ser ses sga sgc sge sgg sgh sgi sgr sgs sh- sha shc she shg shh shi shr shs sia sic sie sig sih sii sir sis sr- sra src sre srg srh sri srr srs ss- ssa ssc sse ssg ssh ssi ssr sss