-al -er -ic a-a a-c a-i aaa aac aae aag aai aak aal aar aas ac- aca acc ace acg aci ack acl acr acs aea aec aee aeg aei aek ael aer aes ag- aga agc age agg agi agk agl agr ags ai- aia aic aie aig aii aik ail air ais aka akc ake akg aki akk akl akr aks al- ala alc ale alg ali alk all alr als ar- ara arc are arg ari ark arl arr ars as- asa asc ase asg asi ask asl asr ass c-- caa cac cae cag cai cak cal car cas cca ccc cce ccg cci cck ccl ccr ccs ce- cea cec cee ceg cei cek cel cer ces cga cgc cge cgg cgi cgl cgr cgs ci- cia cic cie cig cii cik cil cir cis cka ckc cki cks cl- cla clc cle clg cli clk cll clr cls cra crc cre crg cri crk crl crr crs csa csc cse csg csi csk csl csr css eaa eac eae eag eai eak eal ear eas ec- eca ecc ece ecg eci eck ecl ecr ecs eea eec eee eeg eek eel eer ees ega egc ege egg egi egl egr egs eia eic eie eig eii eik eil eir eis eka ekc eke ekg eki ekl ekr eks ela elc ele elg eli elk ell elr els era erc ere erg eri erk erl err ers es- esa esc ese esg esi esk esl esr ess gaa gac gae gag gai gak gal gar gas gca gcc gce gcg gci gck gcl gcr gcs ge- gea gec gee geg gei gek gel ger ges gga ggc ggg ggi ggr ggs gia gic gie gig gii gik gil gir gis gka gks gla glc gle glg gli glk gll glr gls gra grc gre grg gri grk grl grr grs gsa gsc gse gsg gsi gsk gsl gsr gss ia- iaa iac iae iag iai ial iar ias ica icc ice icg ici ick icl icr ics ie- iea iec iee ieg iei iek iel ier ies iga igc ige igg igi igk igl igr igs iia iic iie iii iil iir iis ika ikc ike iki ikk ikl ikr iks il- ila ilc ile ilg ili ilk ill ilr ils ir- ira irc ire irg iri irk irl irr irs is- isa isc ise isg isi isk isl isr iss ka- kaa kac kae kag kai kak kal kar kas kca kcc kce kcg kci kck kcl kcr kcs ke- kea kec kee keg kei kek kel ker kes kga kgc kgi kgl kgs kia kic kie kig kii kik kil kir kis kkc kke kki kkk kkl kkr kks kl- kla klc klg kli klr kls kra krc krg kri krk krl krr krs ksa ksc kse ksg ksi ksk ksl ksr kss la- laa lac lae lag lai lak lal lar las lca lcc lce lcg lci lck lcl lcr lcs lea lec lee leg lei lek lel ler les lga lgc lge lgg lgi lgk lgl lgr lgs lia lic lie lig lii lik lil lir lis lka lkg lkl lkr lks lla llc lle llg lli llk lll llr lls lra lrc lrg lri lrk lrr lrs lsa lsc lse lsg lsi lsk lsl lsr lss ra- raa rac rae rag rai rak ral rar ras rca rcc rce rcg rci rcl rcr rcs re- rea rec ree reg rei rek rel rer res rga rgc rge rgg rgi rgk rgr rgs ria ric rie rig rii rik ril rir ris rkc rke rkg rkk rks rla rlc rle rlg rli rll rlr rls rra rrc rrg rri rrk rrl rrr rrs rsa rsc rse rsg rsi rsk rsl rsr rss saa sac sae sag sai sak sal sar sas sca scc sce scg sci sck scl scr scs se- sea sec see seg sei sek sel ser ses sga sgc sge sgg sgi sgk sgl sgr sgs sia sic sie sig sii sik sil sir sis sk- ska skc ske skg ski skk skl skr sks sla slc sle slg sli slk sll slr sls sr- sra src sre srg sri srk srl srr srs ss- ssa ssc sse ssg ssi ssk ssl ssr sss