-er -ic a-a a-c a-i aaa aac aad aae aag aai aak aar aas ac- aca acc acd ace acg aci ack acr acs ad- ada adc add ade adg adi adk adr ads aea aec aed aee aeg aei aek aer aes ag- aga agc agd age agg agi agk agr ags ai- aia aic aid aie aig aii aik air ais aka akc akd ake akg aki akk akr aks ar- ara arc ard are arg ari ark arr ars as- asa asc asd ase asg asi ask asr ass c-- caa cac cad cae cag cai cak car cas cca ccc ccd cce ccg cci cck ccr ccs cda cdc cdd cde cdg cdi cdk cdr cds ce- cea cec ced cee ceg cei cek cer ces cga cgc cgd cge cgg cgi cgr cgs ci- cia cic cid cie cig cii cik cir cis cka ckc ckd cki cks cra crc crd cre crg cri crk crr crs csa csc csd cse csg csi csk csr css daa dac dad dae dag dai dak dar das dca dcc dcd dce dcg dci dck dcr dcs dda ddc ddd dde ddg ddi ddk ddr dds de- dea dec ded dee deg dei dek der des dga dgc dgd dge dgg dgi dgk dgr dgs di- dia dic did die dig dii dik dir dis dka dkc dke dkg dki dkk dkr dks dra drc drd dre drg dri drk drr drs dsa dsc dsd dse dsg dsi dsk dsr dss eaa eac ead eae eag eai eak ear eas ec- eca ecc ecd ece ecg eci eck ecr ecs ed- eda edc edd ede edg edi edk edr eds eea eec eed eee eeg eek eer ees ega egc egd ege egg egi egr egs eia eic eid eie eig eii eik eir eis eka ekc ekd eke ekg eki ekr eks era erc erd ere erg eri erk err ers es- esa esc esd ese esg esi esk esr ess g-d gaa gac gad gae gag gai gak gar gas gca gcc gcd gce gcg gci gck gcr gcs gda gdc gdd gde gdi gdk gdr gds ge- gea gec ged gee geg gei gek ger ges gga ggc ggd ggg ggi ggr ggs gia gic gid gie gig gii gik gir gis gka gkd gks gra grc grd gre grg gri grk grr grs gsa gsc gsd gse gsg gsi gsk gsr gss i-d ia- iaa iac iad iae iag iai iar ias ica icc icd ice icg ici ick icr ics ida idc idd ide idg idi idk idr ids ie- iea iec ied iee ieg iei iek ier ies iga igc igd ige igg igi igk igr igs iia iic iid iie iii iir iis ika ikc ike iki ikk ikr iks ir- ira irc ird ire irg iri irk irr irs is- isa isc isd ise isg isi isk isr iss ka- kaa kac kad kae kag kai kak kar kas kca kcc kcd kce kcg kci kck kcr kcs kda kdc kde kdg kdk kdr kds ke- kea kec ked kee keg kei kek ker kes kga kgc kgd kgi kgs kia kic kid kie kig kii kik kir kis kkc kke kki kkk kkr kks kra krc krd krg kri krk krr krs ksa ksc ksd kse ksg ksi ksk ksr kss ra- raa rac rad rae rag rai rak rar ras rca rcc rcd rce rcg rci rcr rcs rda rdc rdd rde rdg rdi rdr rds re- rea rec red ree reg rei rek rer res rga rgc rgd rge rgg rgi rgk rgr rgs ria ric rid rie rig rii rik rir ris rkc rke rkg rkk rks rra rrc rrd rrg rri rrk rrr rrs rsa rsc rsd rse rsg rsi rsk rsr rss saa sac sad sae sag sai sak sar sas sca scc scd sce scg sci sck scr scs sda sdc sdd sde sdg sdi sdk sdr sds se- sea sec sed see seg sei sek ser ses sga sgc sgd sge sgg sgi sgk sgr sgs sia sic sid sie sig sii sik sir sis sk- ska skc skd ske skg ski skk skr sks sr- sra src srd sre srg sri srk srr srs ss- ssa ssc ssd sse ssg ssi ssk ssr sss