-ic a-a a-c a-i a-t aaa aac aag aai aan aao aar aas aat ac- aca acc acg aci acn aco acr acs act ag- aga agc agg agi agn ago agr ags agt ai- aia aic aig aii ain aio air ais ait an- ana anc ang ani ann ano anr ans ant aoa aoc aog aoi aon aoo aor aos aot ar- ara arc arg ari arn aro arr ars art as- asa asc asg asi asn aso asr ass ast at- ata atc atg ati atn ato atr ats att c-- caa cac cag cai can cao car cas cat cca ccc ccg cci ccn cco ccr ccs cct cga cgc cgg cgi cgn cgo cgr cgs cgt ci- cia cic cig cii cin cio cir cis cit cn- cna cnc cng cni cnn cno cnr cns cnt co- coa coc cog coi con coo cor cos cot cra crc crg cri crn cro crr crs crt csa csc csg csi csn cso csr css cst cta ctc ctg cti ctn cto ctr cts ctt gaa gac gag gai gan gao gar gas gat gca gcc gcg gci gcn gco gcr gcs gct gga ggc ggg ggi ggn ggo ggr ggs ggt gia gic gig gii gin gio gir gis git gna gnc gni gnn gno gnr gns gnt goa goc gog goi gon goo gor gos got gra grc grg gri grn gro grr grs grt gsa gsc gsg gsi gsn gso gsr gss gst gta gtc gtg gti gtn gto gtr gts gtt ia- iaa iac iag iai ian iao iar ias iat ica icc icg ici icn ico icr ics ict iga igc igg igi ign igo igr igs igt iia iic iii iin iio iir iis iit in- ina inc ing ini inn ino inr ins int io- ioa ioc iog ioi ion ioo ior ios iot ir- ira irc irg iri irn iro irr irs irt is- isa isc isg isi isn iso isr iss ist ita itc itg iti itn ito its itt n-i naa nac nag nai nan nao nar nas nat nca ncc ncg nci ncn nco ncr ncs nct nga ngc ngg ngi ngn ngo ngs ngt nia nic nig nii nin nio nir nis nit nna nnc nng nni nnn nno nns nnt no- noa noc nog noi non noo nor nos not nra nrc nrg nri nrn nro nrr nrs nrt nsa nsc nsg nsi nsn nso nsr nss nst nta ntc ntg nti ntn nto ntr nts ntt o-i oaa oac oag oai oan oao oar oas oat oc- oca occ ocg oci ocn oco ocr ocs oct oga ogc ogg ogi ogn ogo ogs ogt oia oic oii oin oio oir ois oit on- ona onc ong oni onn ono onr ons ont oo- ooa ooc oog ooi oon ooo oor oos oot or- ora orc org ori orn oro orr ors ort os- osa osc osg osi osn oso osr oss ost ot- ota otc otg oti otn oto otr ots ott ra- raa rac rag rai ran rao rar ras rat rca rcc rcg rci rcn rco rcr rcs rct rga rgc rgg rgi rgn rgo rgr rgs rgt ria ric rig rii rin rio rir ris rit rna rnc rng rni rnn rno rnr rns rnt roa roc rog roi ron roo ror ros rot rra rrc rrg rri rrn rrr rrs rrt rsa rsc rsg rsi rsn rso rsr rss rst rta rtc rtg rti rtn rto rtr rts rtt saa sac sag sai san sao sar sas sat sca scc scg sci scn sco scr scs sct sga sgc sgg sgi sgn sgo sgr sgs sgt sia sic sig sii sin sio sir sis sit sna snc sng sni snn sno snr sns snt soa soc sog soi son soo sor sos sot sr- sra src srg sri srn sro srr srs srt ss- ssa ssc ssg ssi ssn sso ssr sss sst sta stc stg sti stn sto str sts stt taa tac tag tai tan tao tar tas tat tca tcc tcg tci tcn tco tcr tcs tct tga tgc tgg tgi tgn tgo tgr tgs tgt tia tic tig tii tin tio tir tis tit tna tnc tng tni tnn tno tnr tns tnt to- toa toc tog toi ton too tor tos tot tra trc trg tri trn tro trr trs trt tsa tsc tsg tsi tsn tso tsr tss tst tta ttc ttg tti ttn tto ttr tts ttt