-al -ol a-a a-c a-t aaa aac aaf aag aal aan aao aar aat ac- aca acc acf acg acl acn aco acr act af- afa afc aff afg afl afn afo afr aft ag- aga agc agf agg agl agn ago agr agt al- ala alc alf alg all aln alo alr alt an- ana anc anf ang anl ann ano anr ant aoa aoc aof aog aol aon aoo aor aot ar- ara arc arf arg arl arn aro arr art at- ata atc atf atg atl atn ato atr att c-- caa cac caf cag cal can cao car cat cca ccc ccf ccg ccl ccn cco ccr cct cfa cfc cff cfg cfl cfn cfo cfr cft cga cgc cgg cgl cgn cgo cgr cgt cl- cla clc clf clg cll cln clo clr clt cn- cna cnc cnf cng cnl cnn cno cnr cnt co- coa coc cof cog col con coo cor cot cra crc crf crg crl crn cro crr crt cta ctc ctf ctg ctl ctn cto ctr ctt faa fac faf fag fal fan fao far fat fca fcc fcf fcg fcl fcn fco fcr fct ffa ffc fff ffg ffl ffn ffo ffr fft fga fgc fgf fgg fgl fgn fgr fgt fla flc flf flg fll fln flo flr flt fna fnc fnf fng fnl fnn fnr fnt foa foc fof fog fol fon foo for fot fra frc frf frg frl frn fro frr frt fta ftc ftf ftg ftl ftn fto ftr ftt gaa gac gaf gag gal gan gao gar gat gca gcc gcf gcg gcl gcn gco gcr gct gfa gfc gff gfl gfo gfr gft gga ggc ggg ggn ggo ggr ggt gla glc glf glg gll gln glo glr glt gna gnc gnf gnl gnn gno gnr gnt goa goc gof gog gol gon goo gor got gra grc grf grg grl grn gro grr grt gta gtc gtf gtg gtl gtn gto gtr gtt la- laa lac laf lag lal lan lao lar lat lca lcc lcf lcg lcl lcn lco lcr lct lfa lfc lff lfg lfl lfn lfo lfr lft lga lgc lgf lgg lgl lgn lgo lgr lgt lla llc llf llg lll lln llo llr llt lna lnc lng lnl lnn lno lnr lnt loa loc lof log lol lon loo lor lot lra lrc lrf lrg lrn lro lrr lrt lta ltc ltf ltg ltl lto ltr ltt naa nac naf nag nal nan nao nar nat nca ncc ncf ncg ncl ncn nco ncr nct nfa nfc nff nfl nfn nfo nfr nft nga ngc ngf ngg ngl ngn ngo ngt nla nlc nlf nlg nll nln nlo nlr nlt nna nnc nnf nng nnl nnn nno nnt no- noa noc nof nog nol non noo nor not nra nrc nrf nrg nrl nrn nro nrr nrt nta ntc ntf ntg ntn nto ntr ntt oaa oac oaf oag oal oan oao oar oat oc- oca occ ocf ocg ocl ocn oco ocr oct of- ofa ofc off ofg ofl ofn ofo ofr oft oga ogc ogf ogg ogl ogn ogo ogt ola olc olf olg oll oln olo olt on- ona onc onf ong onl onn ono onr ont oo- ooa ooc oof oog ool oon ooo oor oot or- ora orc orf org orl orn oro orr ort ot- ota otc otf otg otl otn oto otr ott ra- raa rac raf rag ral ran rao rar rat rca rcc rcf rcg rcl rcn rco rcr rct rfa rfc rff rfg rfl rfn rfo rfr rft rga rgc rgf rgg rgn rgo rgr rgt rla rlc rlf rlg rll rln rlo rlr rlt rna rnc rng rnn rno rnr rnt roa roc rof rog rol ron roo ror rot rra rrc rrf rrg rrl rrn rrr rrt rta rtc rtf rtg rtl rtn rto rtr rtt taa tac taf tag tal tan tao tar tat tca tcc tcf tcg tcl tcn tco tcr tct tfa tfc tff tfg tfl tfn tfo tfr tft tga tgc tgf tgg tgl tgn tgo tgr tgt tla tlc tlf tlg tll tln tlo tlr tlt tna tnc tnf tng tnl tnn tno tnr tnt to- toa toc tof tog tol ton too tor tot tra trc trf trg trl trn tro trr trt tta ttc ttf ttg ttl ttn tto ttr ttt