-ic a-a a-c a-i a-t aaa aac aaf aag aai aan aao aar aat ac- aca acc acf acg aci acn aco acr act af- afa afc aff afg afi afn afo afr aft ag- aga agc agf agg agi agn ago agr agt ai- aia aic aif aig aii ain aio air ait an- ana anc anf ang ani ann ano anr ant aoa aoc aof aog aoi aon aoo aor aot ar- ara arc arf arg ari arn aro arr art at- ata atc atf atg ati atn ato atr att c-- caa cac caf cag cai can cao car cat cca ccc ccf ccg cci ccn cco ccr cct cfa cfc cff cfg cfi cfn cfo cfr cft cga cgc cgg cgi cgn cgo cgr cgt ci- cia cic cif cig cii cin cio cir cit cn- cna cnc cnf cng cni cnn cno cnr cnt co- coa coc cof cog coi con coo cor cot cra crc crf crg cri crn cro crr crt cta ctc ctf ctg cti ctn cto ctr ctt faa fac faf fag fai fan fao far fat fca fcc fcf fcg fci fcn fco fcr fct ffa ffc fff ffg ffi ffn ffo ffr fft fga fgc fgf fgg fgi fgn fgr fgt fia fic fif fig fii fin fir fit fna fnc fnf fng fni fnn fnr fnt foa foc fof fog foi fon foo for fot fra frc frf frg fri frn fro frr frt fta ftc ftf ftg fti ftn fto ftr ftt gaa gac gaf gag gai gan gao gar gat gca gcc gcf gcg gci gcn gco gcr gct gfa gfc gff gfi gfo gfr gft gga ggc ggg ggi ggn ggo ggr ggt gia gic gif gig gii gin gio gir git gna gnc gnf gni gnn gno gnr gnt goa goc gof gog goi gon goo gor got gra grc grf grg gri grn gro grr grt gta gtc gtf gtg gti gtn gto gtr gtt i-f ia- iaa iac iaf iag iai ian iao iar iat ica icc icf icg ici icn ico icr ict ifa ifc iff ifg ifi ifn ifo ifr ift iga igc igf igg igi ign igo igr igt iia iic iif iii iin iio iir iit in- ina inc inf ing ini inn ino inr int io- ioa ioc iof iog ioi ion ioo ior iot ir- ira irc irf irg iri irn iro irr irt ita itc itf itg iti itn ito itt n-i naa nac naf nag nai nan nao nar nat nca ncc ncf ncg nci ncn nco ncr nct nfa nfc nff nfi nfn nfo nfr nft nga ngc ngf ngg ngi ngn ngo ngt nia nic nif nig nii nin nio nir nit nna nnc nnf nng nni nnn nno nnt no- noa noc nof nog noi non noo nor not nra nrc nrf nrg nri nrn nro nrr nrt nta ntc ntf ntg nti ntn nto ntr ntt o-i oaa oac oaf oag oai oan oao oar oat oc- oca occ ocf ocg oci ocn oco ocr oct of- ofa ofc off ofg ofi ofn ofo ofr oft oga ogc ogf ogg ogi ogn ogo ogt oia oic oif oii oin oio oir oit on- ona onc onf ong oni onn ono onr ont oo- ooa ooc oof oog ooi oon ooo oor oot or- ora orc orf org ori orn oro orr ort ot- ota otc otf otg oti otn oto otr ott ra- raa rac raf rag rai ran rao rar rat rca rcc rcf rcg rci rcn rco rcr rct rfa rfc rff rfg rfi rfn rfo rfr rft rga rgc rgf rgg rgi rgn rgo rgr rgt ria ric rif rig rii rin rio rir rit rna rnc rng rni rnn rno rnr rnt roa roc rof rog roi ron roo ror rot rra rrc rrf rrg rri rrn rrr rrt rta rtc rtf rtg rti rtn rto rtr rtt taa tac taf tag tai tan tao tar tat tca tcc tcf tcg tci tcn tco tcr tct tfa tfc tff tfg tfi tfn tfo tfr tft tga tgc tgf tgg tgi tgn tgo tgr tgt tia tic tif tig tii tin tio tir tit tna tnc tnf tng tni tnn tno tnr tnt to- toa toc tof tog toi ton too tor tot tra trc trf trg tri trn tro trr trt tta ttc ttf ttg tti ttn tto ttr ttt