-ic a-a a-c a-i a-t aaa aac aaf aag aai aan aao aas aat ac- aca acc acf acg aci acn aco acs act af- afa afc aff afg afi afn afo afs aft ag- aga agc agf agg agi agn ago ags agt ai- aia aic aif aig aii ain aio ais ait an- ana anc anf ang ani ann ano ans ant aoa aoc aof aog aoi aon aoo aos aot as- asa asc asf asg asi asn aso ass ast at- ata atc atf atg ati atn ato ats att c-- caa cac caf cag cai can cao cas cat cca ccc ccf ccg cci ccn cco ccs cct cfa cfc cff cfg cfi cfn cfo cfs cft cga cgc cgg cgi cgn cgo cgs cgt ci- cia cic cif cig cii cin cio cis cit cn- cna cnc cnf cng cni cnn cno cns cnt co- coa coc cof cog coi con coo cos cot csa csc csf csg csi csn cso css cst cta ctc ctf ctg cti ctn cto cts ctt faa fac faf fag fai fan fao fas fat fca fcc fcf fcg fci fcn fco fcs fct ffa ffc fff ffg ffi ffn ffo ffs fft fga fgc fgf fgg fgi fgn fgs fgt fia fic fif fig fii fin fis fit fna fnc fnf fng fni fnn fns fnt foa foc fof fog foi fon foo fos fot fsa fsc fsf fsg fsi fsn fso fss fst fta ftc ftf ftg fti ftn fto fts ftt gaa gac gaf gag gai gan gao gas gat gca gcc gcf gcg gci gcn gco gcs gct gfa gfc gff gfi gfo gfs gft gga ggc ggg ggi ggn ggo ggs ggt gia gic gif gig gii gin gio gis git gna gnc gnf gni gnn gno gns gnt goa goc gof gog goi gon goo gos got gsa gsc gsf gsg gsi gsn gso gss gst gta gtc gtf gtg gti gtn gto gts gtt i-f ia- iaa iac iaf iag iai ian iao ias iat ica icc icf icg ici icn ico ics ict ifa ifc iff ifg ifi ifn ifo ifs ift iga igc igf igg igi ign igo igs igt iia iic iif iii iin iio iis iit in- ina inc inf ing ini inn ino ins int io- ioa ioc iof iog ioi ion ioo ios iot is- isa isc isf isg isi isn iso iss ist ita itc itf itg iti itn ito its itt n-i naa nac naf nag nai nan nao nas nat nca ncc ncf ncg nci ncn nco ncs nct nfa nfc nff nfi nfn nfo nfs nft nga ngc ngf ngg ngi ngn ngo ngs ngt nia nic nif nig nii nin nio nis nit nna nnc nnf nng nni nnn nno nns nnt no- noa noc nof nog noi non noo nos not nsa nsc nsf nsg nsi nsn nso nss nst nta ntc ntf ntg nti ntn nto nts ntt o-i oaa oac oaf oag oai oan oao oas oat oc- oca occ ocf ocg oci ocn oco ocs oct of- ofa ofc off ofg ofi ofn ofo ofs oft oga ogc ogf ogg ogi ogn ogo ogs ogt oia oic oif oii oin oio ois oit on- ona onc onf ong oni onn ono ons ont oo- ooa ooc oof oog ooi oon ooo oos oot os- osa osc osf osg osi osn oso oss ost ot- ota otc otf otg oti otn oto ots ott saa sac saf sag sai san sao sas sat sca scc scf scg sci scn sco scs sct sfa sfc sff sfg sfi sfn sfo sfs sft sga sgc sgf sgg sgi sgn sgo sgs sgt sia sic sif sig sii sin sio sis sit sna snc snf sng sni snn sno sns snt soa soc sof sog soi son soo sos sot ss- ssa ssc ssf ssg ssi ssn sso sss sst sta stc stf stg sti stn sto sts stt taa tac taf tag tai tan tao tas tat tca tcc tcf tcg tci tcn tco tcs tct tfa tfc tff tfg tfi tfn tfo tfs tft tga tgc tgf tgg tgi tgn tgo tgs tgt tia tic tif tig tii tin tio tis tit tna tnc tnf tng tni tnn tno tns tnt to- toa toc tof tog toi ton too tos tot tsa tsc tsf tsg tsi tsn tso tss tst tta ttc ttf ttg tti ttn tto tts ttt