-er -ic a-a a-c a-i a-t aaa aac aae aag aai aan aao aar aas aat ac- aca acc ace acg aci acn aco acr acs act aea aec aee aeg aei aen aeo aer aes aet ag- aga agc age agg agi agn ago agr ags agt ai- aia aic aie aig aii ain aio air ais ait an- ana anc ane ang ani ann ano anr ans ant aoa aoc aoe aog aoi aon aoo aor aos aot ar- ara arc are arg ari arn aro arr ars art as- asa asc ase asg asi asn aso asr ass ast at- ata atc ate atg ati atn ato atr ats att c-- caa cac cae cag cai can cao car cas cat cca ccc cce ccg cci ccn cco ccr ccs cct ce- cea cec cee ceg cei cen ceo cer ces cet cga cgc cge cgg cgi cgn cgo cgr cgs cgt ci- cia cic cie cig cii cin cio cir cis cit cn- cna cnc cne cng cni cnn cno cnr cns cnt co- coa coc coe cog coi con coo cor cos cot cra crc cre crg cri crn cro crr crs crt csa csc cse csg csi csn cso csr css cst cta ctc cte ctg cti ctn cto ctr cts ctt eaa eac eae eag eai ean eao ear eas eat ec- eca ecc ece ecg eci ecn eco ecr ecs ect eea eec eee eeg een eeo eer ees eet ega egc ege egg egi egn ego egr egs egt eia eic eie eig eii ein eio eir eis eit en- ena enc ene eng eni enn eno enr ens ent eo- eoa eoc eoe eog eoi eon eoo eor eos eot era erc ere erg eri ern ero err ers ert es- esa esc ese esg esi esn eso esr ess est eta etc ete etg eti etn eto etr ets ett gaa gac gae gag gai gan gao gar gas gat gca gcc gce gcg gci gcn gco gcr gcs gct ge- gea gec gee geg gei gen geo ger ges get gga ggc ggg ggi ggn ggo ggr ggs ggt gia gic gie gig gii gin gio gir gis git gna gnc gne gni gnn gno gnr gns gnt goa goc goe gog goi gon goo gor gos got gra grc gre grg gri grn gro grr grs grt gsa gsc gse gsg gsi gsn gso gsr gss gst gta gtc gte gtg gti gtn gto gtr gts gtt ia- iaa iac iae iag iai ian iao iar ias iat ica icc ice icg ici icn ico icr ics ict ie- iea iec iee ieg iei ien ier ies iet iga igc ige igg igi ign igo igr igs igt iia iic iie iii iin iio iir iis iit in- ina inc ine ing ini inn ino inr ins int io- ioa ioc ioe iog ioi ion ioo ior ios iot ir- ira irc ire irg iri irn iro irr irs irt is- isa isc ise isg isi isn iso isr iss ist ita itc ite itg iti itn ito its itt n-i naa nac nae nag nai nan nao nar nas nat nca ncc nce ncg nci ncn nco ncr ncs nct ne- nea nec nee neg nei nen neo ner nes net nga ngc nge ngg ngi ngn ngo ngs ngt nia nic nie nig nii nin nio nir nis nit nna nnc nne nng nni nnn nno nns nnt no- noa noc noe nog noi non noo nor nos not nra nrc nre nrg nri nrn nro nrr nrs nrt nsa nsc nse nsg nsi nsn nso nsr nss nst nta ntc nte ntg nti ntn nto ntr nts ntt o-i oaa oac oae oag oai oan oao oar oas oat oc- oca occ ocg oci ocn oco ocr ocs oct oea oec oee oeg oei oen oeo oer oes oet oga ogc oge ogg ogi ogn ogo ogs ogt oia oic oie oii oin oio oir ois oit on- ona onc one ong oni onn ono onr ons ont oo- ooa ooc oog ooi oon ooo oor oos oot or- ora orc ore org ori orn oro orr ors ort os- osa osc ose osg osi osn oso osr oss ost ot- ota otc ote otg oti otn oto otr ots ott ra- raa rac rae rag rai ran rao rar ras rat rca rcc rce rcg rci rcn rco rcr rcs rct re- rea rec ree reg rei ren reo rer res ret rga rgc rge rgg rgi rgn rgo rgr rgs rgt ria ric rie rig rii rin rio rir ris rit rna rnc rng rni rnn rno rnr rns rnt roa roc roe rog roi ron roo ror ros rot rra rrc rrg rri rrn rrr rrs rrt rsa rsc rse rsg rsi rsn rso rsr rss rst rta rtc rte rtg rti rtn rto rtr rts rtt saa sac sae sag sai san sao sar sas sat sca scc sce scg sci scn sco scr scs sct se- sea sec see seg sei sen seo ser ses set sga sgc sge sgg sgi sgn sgo sgr sgs sgt sia sic sie sig sii sin sio sir sis sit sna snc sne sng sni snn sno snr sns snt soa soc soe sog soi son soo sor sos sot sr- sra src sre srg sri srn sro srr srs srt ss- ssa ssc sse ssg ssi ssn sso ssr sss sst sta stc ste stg sti stn sto str sts stt taa tac tae tag tai tan tao tar tas tat tca tcc tce tcg tci tcn tco tcr tcs tct te- tea tec tee teg tei ten teo ter tes tet tga tgc tge tgg tgi tgn tgo tgr tgs tgt tia tic tie tig tii tin tio tir tis tit tna tnc tne tng tni tnn tno tnr tns tnt to- toa toc toe tog toi ton too tor tos