-ic a-a a-c a-i a-t aaa aac aag aai aak aan aao aar aas aat ac- aca acc acg aci ack acn aco acr acs act ag- aga agc agg agi agk agn ago agr ags agt ai- aia aic aig aii aik ain aio air ais ait aka akc akg aki akk akn ako akr aks an- ana anc ang ani ank ann ano anr ans ant aoa aoc aog aoi aok aon aoo aor aos aot ar- ara arc arg ari ark arn aro arr ars art as- asa asc asg asi ask asn aso asr ass ast at- ata atc atg ati atn ato atr ats att c-- caa cac cag cai cak can cao car cas cat cca ccc ccg cci cck ccn cco ccr ccs cct cga cgc cgg cgi cgn cgo cgr cgs cgt ci- cia cic cig cii cik cin cio cir cis cit cka ckc cki cko cks ckt cn- cna cnc cng cni cnn cno cnr cns cnt co- coa coc cog coi cok con coo cor cos cot cra crc crg cri crk crn cro crr crs crt csa csc csg csi csk csn cso csr css cst cta ctc ctg cti ctk ctn cto ctr cts ctt gaa gac gag gai gak gan gao gar gas gat gca gcc gcg gci gck gcn gco gcr gcs gct gga ggc ggg ggi ggn ggo ggr ggs ggt gia gic gig gii gik gin gio gir gis git gka gkn gko gks gkt gna gnc gni gnn gno gnr gns gnt goa goc gog goi gok gon goo gor gos got gra grc grg gri grk grn gro grr grs grt gsa gsc gsg gsi gsk gsn gso gsr gss gst gta gtc gtg gti gtk gtn gto gtr gts gtt ia- iaa iac iag iai ian iao iar ias iat ica icc icg ici ick icn ico icr ics ict iga igc igg igi igk ign igo igr igs igt iia iic iii iin iio iir iis iit ika ikc iki ikk iko ikr iks ikt in- ina inc ing ini ink inn ino inr ins int io- ioa ioc iog ioi ion ioo ior ios iot ir- ira irc irg iri irk irn iro irr irs irt is- isa isc isg isi isk isn iso isr iss ist ita itc itg iti itk itn ito its itt k-t ka- kaa kac kag kai kak kan kao kar kas kat kca kcc kcg kci kck kcn kcr kcs kct kga kgc kgi kgo kgs kia kic kig kii kik kin kio kir kis kit kkc kki kkk kkn kkr kks kkt kn- kna knc kng kni knk knn kno knr knt koa koc kog koi kok kon koo kor kos kot kra krc krg kri krk krn kro krr krs krt ksa ksc ksg ksi ksk ksn kso ksr kss kst kta ktc ktg ktk ktn kto ktr kts ktt n-i naa nac nag nai nak nan nao nar nas nat nca ncc ncg nci nck ncn nco ncr ncs nct nga ngc ngg ngi ngk ngn ngo ngs ngt nia nic nig nii nik nin nio nir nis nit nka nkc nki nkk nkn nko nkr nks nkt nna nnc nng nni nnk nnn nno nns nnt no- noa noc nog noi nok non noo nor nos not nra nrc nrg nri nrk nrn nro nrr nrs nrt nsa nsc nsg nsi nsk nsn nso nsr nss nst nta ntc ntg nti ntk ntn nto ntr nts ntt o-i oaa oac oag oai oak oan oao oar oas oat oc- oca occ ocg oci ock ocn oco ocr ocs oct oga ogc ogg ogi ogn ogo ogs ogt oia oic oii oik oin oio oir ois oit oka okc okg oki okk oko okr oks on- ona onc ong oni onk onn ono onr ons ont oo- ooa ooc oog ooi ook oon ooo oor oos oot or- ora orc org ori ork orn oro orr ors ort os- osa osc osg osi osk osn oso osr oss ost ot- ota otc otg oti otk otn oto otr ots ott ra- raa rac rag rai rak ran rao rar ras rat rca rcc rcg rci rcn rco rcr rcs rct rga rgc rgg rgi rgk rgn rgo rgr rgs rgt ria ric rig rii rik rin rio rir ris rit rkc rkg rkk rko rks rkt rna rnc rng rni rnn rno rnr rns rnt roa roc rog roi rok ron roo ror ros rot rra rrc rrg rri rrk rrn rrr rrs rrt rsa rsc rsg rsi rsk rsn rso rsr rss rst rta rtc rtg rti rtk rtn rto rtr rts rtt saa sac sag sai sak san sao sar sas sat sca scc scg sci sck scn sco scr scs sct sga sgc sgg sgi sgk sgn sgo sgr sgs sgt sia sic sig sii sik sin sio sir sis sit sk- ska skc skg ski skk sko skr sks skt sna snc sng sni snk snn sno snr sns snt soa soc sog soi sok son soo sor sos sot sr- sra src srg sri srk srn sro srr srs srt ss- ssa ssc ssg ssi ssk ssn sso ssr sss sst sta stc stg sti stk stn sto str sts stt taa tac tag tai tak tan tao tar tas tat tca tcc tcg tci tck tcn tco tcr tcs tct tga tgc tgg tgi tgk tgn tgo tgr tgs tgt tia tic tig tii tik tin tio tir tis tit tka tkc tkg tkk tko tkr tks tkt tna tnc tng tni tnk tnn tno tnr tns tnt to- toa toc tog toi tok ton too tor tos tot tra trc trg tri trk trn tro trr trs trt tsa tsc tsg tsi tsk tsn tso tsr tss tst tta ttc ttg tti ttk ttn tto ttr tts ttt