-er -ic a-a a-c a-i aaa aac aae aaf aag aai aan aar aas ac- aca acc ace acf acg aci acn acr acs aea aec aee aef aeg aei aen aer aes af- afa afc afe aff afg afi afn afr afs ag- aga agc age agf agg agi agn agr ags ai- aia aic aie aif aig aii ain air ais an- ana anc ane anf ang ani ann anr ans ar- ara arc are arf arg ari arn arr ars as- asa asc ase asf asg asi asn asr ass c-- caa cac cae caf cag cai can car cas cca ccc cce ccf ccg cci ccn ccr ccs ce- cea cec cee cef ceg cei cen cer ces cfa cfc cfe cff cfg cfi cfn cfr cfs cga cgc cge cgg cgi cgn cgr cgs ci- cia cic cie cif cig cii cin cir cis cn- cna cnc cne cnf cng cni cnn cnr cns cra crc cre crf crg cri crn crr crs csa csc cse csf csg csi csn csr css eaa eac eae eaf eag eai ean ear eas ec- eca ecc ece ecf ecg eci ecn ecr ecs eea eec eee eef eeg een eer ees ef- efa efc efe eff efg efi efr efs ega egc ege egf egg egi egn egr egs eia eic eie eif eig eii ein eir eis en- ena enc ene enf eng eni enn enr ens era erc ere erf erg eri ern err ers es- esa esc ese esf esg esi esn esr ess faa fac fae faf fag fai fan far fas fca fcc fce fcf fcg fci fcn fcr fcs fea fec fee fef feg fei fen fer fes ffa ffc ffe fff ffg ffi ffn ffr ffs fga fgc fge fgf fgg fgi fgn fgr fgs fia fic fie fif fig fii fin fir fis fna fnc fne fnf fng fni fnn fnr fns fra frc fre frf frg fri frn frr frs fsa fsc fse fsf fsg fsi fsn fsr fss gaa gac gae gaf gag gai gan gar gas gca gcc gce gcf gcg gci gcn gcr gcs ge- gea gec gee gef geg gei gen ger ges gfa gfc gfe gff gfi gfr gfs gga ggc ggg ggi ggn ggr ggs gia gic gie gif gig gii gin gir gis gna gnc gne gnf gni gnn gnr gns gra grc gre grf grg gri grn grr grs gsa gsc gse gsf gsg gsi gsn gsr gss i-f ia- iaa iac iae iaf iag iai ian iar ias ica icc ice icf icg ici icn icr ics ie- iea iec iee ief ieg iei ien ier ies ifa ifc ife iff ifg ifi ifn ifr ifs iga igc ige igf igg igi ign igr igs iia iic iie iif iii iin iir iis in- ina inc ine inf ing ini inn inr ins ir- ira irc ire irf irg iri irn irr irs is- isa isc ise isf isg isi isn isr iss n-i naa nac nae naf nag nai nan nar nas nca ncc nce ncf ncg nci ncn ncr ncs ne- nea nec nee nef neg nei nen ner nes nfa nfc nfe nff nfi nfn nfr nfs nga ngc nge ngf ngg ngi ngn ngs nia nic nie nif nig nii nin nir nis nna nnc nne nnf nng nni nnn nns nra nrc nre nrf nrg nri nrn nrr nrs nsa nsc nse nsf nsg nsi nsn nsr nss ra- raa rac rae raf rag rai ran rar ras rca rcc rce rcf rcg rci rcn rcr rcs re- rea rec ree ref reg rei ren rer res rfa rfc rfe rff rfg rfi rfn rfr rfs rga rgc rge rgf rgg rgi rgn rgr rgs ria ric rie rif rig rii rin rir ris rna rnc rng rni rnn rnr rns rra rrc rrf rrg rri rrn rrr rrs rsa rsc rse rsf rsg rsi rsn rsr rss saa sac sae saf sag sai san sar sas sca scc sce scf scg sci scn scr scs se- sea sec see sef seg sei sen ser ses sfa sfc sfe sff sfg sfi sfn sfr sfs sga sgc sge sgf sgg sgi sgn sgr sgs sia sic sie sif sig sii sin sir sis sna snc sne snf sng sni snn snr sns sr- sra src sre srf srg sri srn srr srs ss- ssa ssc sse ssf ssg ssi ssn ssr sss