-er -ic a-a a-c a-i a-t aaa aac aae aag aai aak aan aar aas aat ac- aca acc ace acg aci ack acn acr acs act aea aec aee aeg aei aek aen aer aes aet ag- aga agc age agg agi agk agn agr ags agt ai- aia aic aie aig aii aik ain air ais ait aka akc ake akg aki akk akn akr aks an- ana anc ane ang ani ank ann anr ans ant ar- ara arc are arg ari ark arn arr ars art as- asa asc ase asg asi ask asn asr ass ast at- ata atc ate atg ati atn atr ats att c-- caa cac cae cag cai cak can car cas cat cca ccc cce ccg cci cck ccn ccr ccs cct ce- cea cec cee ceg cei cek cen cer ces cet cga cgc cge cgg cgi cgn cgr cgs cgt ci- cia cic cie cig cii cik cin cir cis cit cka ckc cki cks ckt cn- cna cnc cne cng cni cnn cnr cns cnt cra crc cre crg cri crk crn crr crs crt csa csc cse csg csi csk csn csr css cst cta ctc cte ctg cti ctk ctn ctr cts ctt eaa eac eae eag eai eak ean ear eas eat ec- eca ecc ece ecg eci eck ecn ecr ecs ect eea eec eee eeg eek een eer ees eet ega egc ege egg egi egn egr egs egt eia eic eie eig eii eik ein eir eis eit eka ekc eke ekg eki ekr eks ekt en- ena enc ene eng eni enk enn enr ens ent era erc ere erg eri erk ern err ers ert es- esa esc ese esg esi esk esn esr ess est eta etc ete etg eti etk etn etr ets ett gaa gac gae gag gai gak gan gar gas gat gca gcc gce gcg gci gck gcn gcr gcs gct ge- gea gec gee geg gei gek gen ger ges get gga ggc ggg ggi ggn ggr ggs ggt gia gic gie gig gii gik gin gir gis git gka gkn gks gkt gna gnc gne gni gnn gnr gns gnt gra grc gre grg gri grk grn grr grs grt gsa gsc gse gsg gsi gsk gsn gsr gss gst gta gtc gte gtg gti gtk gtn gtr gts gtt ia- iaa iac iae iag iai ian iar ias iat ica icc ice icg ici ick icn icr ics ict ie- iea iec iee ieg iei iek ien ier ies iet iga igc ige igg igi igk ign igr igs igt iia iic iie iii iin iir iis iit ika ikc ike iki ikk ikr iks ikt in- ina inc ine ing ini ink inn inr ins int ir- ira irc ire irg iri irk irn irr irs irt is- isa isc ise isg isi isk isn isr iss ist ita itc ite itg iti itk itn its itt k-t ka- kaa kac kae kag kai kak kan kar kas kat kca kcc kce kcg kci kck kcn kcr kcs kct ke- kea kec kee keg kei kek ken ker kes ket kga kgc kgi kgs kia kic kie kig kii kik kin kir kis kit kkc kke kki kkk kkn kkr kks kkt kn- kna knc kne kng kni knk knn knr knt kra krc krg kri krk krn krr krs krt ksa ksc kse ksg ksi ksk ksn ksr kss kst kta ktc kte ktg ktk ktn ktr kts ktt n-i naa nac nae nag nai nak nan nar nas nat nca ncc nce ncg nci nck ncn ncr ncs nct ne- nea nec nee neg nei nek nen ner nes net nga ngc nge ngg ngi ngk ngn ngs ngt nia nic nie nig nii nik nin nir nis nit nka nkc nke nki nkk nkn nkr nks nkt nna nnc nne nng nni nnk nnn nns nnt nra nrc nre nrg nri nrk nrn nrr nrs nrt nsa nsc nse nsg nsi nsk nsn nsr nss nst nta ntc nte ntg nti ntk ntn ntr nts ntt ra- raa rac rae rag rai rak ran rar ras rat rca rcc rce rcg rci rcn rcr rcs rct re- rea rec ree reg rei rek ren rer res ret rga rgc rge rgg rgi rgk rgn rgr rgs rgt ria ric rie rig rii rik rin rir ris rit rkc rke rkg rkk rks rkt rna rnc rng rni rnn rnr rns rnt rra rrc rrg rri rrk rrn rrr rrs rrt rsa rsc rse rsg rsi rsk rsn rsr rss rst rta rtc rte rtg rti rtk rtn rtr rts rtt saa sac sae sag sai sak san sar sas sat sca scc sce scg sci sck scn scr scs sct se- sea sec see seg sei sek sen ser ses set sga sgc sge sgg sgi sgk sgn sgr sgs sgt sia sic sie sig sii sik sin sir sis sit sk- ska skc ske skg ski skk skr sks skt sna snc sne sng sni snk snn snr sns snt sr- sra src sre srg sri srk srn srr srs srt ss- ssa ssc sse ssg ssi ssk ssn ssr sss sst sta stc ste stg sti stk stn str sts stt taa tac tae tag tai tak tan tar tas tat tca tcc tce tcg tci tck tcn tcr tcs tct te- tea tec tee teg tei tek ten ter tes tet tga tgc tge tgg tgi tgk tgn tgr tgs tgt tia tic tie tig tii tik tin tir tis tit tka tkc tke tkg tkk tkr tks tkt tna tnc tne tng tni tnk tnn tnr tns tnt tra trc tre trg tri trk trn trr trs trt tsa tsc tse tsg tsi tsk tsn tsr tss tst tta ttc tte ttg tti ttk ttn ttr tts ttt