-al -ol a-a a-c a-t aaa aac aae aag aal aao aas aat ac- aca acc ace acg acl aco acs act aea aec aee aeg ael aeo aes aet ag- aga agc age agg agl ago ags agt al- ala alc ale alg all alo als alt aoa aoc aoe aog aol aoo aos aot as- asa asc ase asg asl aso ass ast at- ata atc ate atg atl ato ats att c-- caa cac cae cag cal cao cas cat cca ccc cce ccg ccl cco ccs cct ce- cea cec cee ceg cel ceo ces cet cga cgc cge cgg cgl cgo cgs cgt cl- cla clc cle clg cll clo cls clt co- coa coc coe cog col coo cos cot csa csc cse csg csl cso css cst cta ctc cte ctg ctl cto cts ctt eaa eac eae eag eal eao eas eat ec- eca ecc ece ecg ecl eco ecs ect eea eec eee eeg eel eeo ees eet ega egc ege egg egl ego egs egt ela elc ele elg ell elo els elt eo- eoa eoc eoe eog eol eoo eos eot es- esa esc ese esg esl eso ess est eta etc ete etg etl eto ets ett gaa gac gae gag gal gao gas gat gca gcc gce gcg gcl gco gcs gct ge- gea gec gee geg gel geo ges get gga ggc ggg ggo ggs ggt gla glc gle glg gll glo gls glt goa goc goe gog gol goo gos got gsa gsc gse gsg gsl gso gss gst gta gtc gte gtg gtl gto gts gtt la- laa lac lae lag lal lao las lat lca lcc lce lcg lcl lco lcs lct lea lec lee leg lel leo les let lga lgc lge lgg lgl lgo lgs lgt lla llc lle llg lll llo lls llt loa loc loe log lol loo los lot lsa lsc lse lsg lsl lso lss lst lta ltc lte ltg ltl lto lts ltt oaa oac oae oag oal oao oas oat oc- oca occ ocg ocl oco ocs oct oea oec oee oeg oel oeo oes oet oga ogc oge ogg ogl ogo ogs ogt ola olc ole olg oll olo ols olt oo- ooa ooc oog ool ooo oos oot os- osa osc ose osg osl oso oss ost ot- ota otc ote otg otl oto ots ott saa sac sae sag sal sao sas sat sca scc sce scg scl sco scs sct se- sea sec see seg sel seo ses set sga sgc sge sgg sgl sgo sgs sgt sla slc sle slg sll slo sls slt soa soc soe sog sol soo sos sot ss- ssa ssc sse ssg ssl sso sss sst sta stc ste stg stl sto sts stt taa tac tae tag tal tao tas tat tca tcc tce tcg tcl tco tcs tct te- tea tec tee teg tel teo tes tet tga tgc tge tgg tgl tgo tgs tgt tla tlc tle tlg tll tlo tls tlt to- toa toc toe tog tol too tos tot tsa tsc tse tsg tsl tso tss tst tta ttc tte ttg ttl tto tts ttt