-al -ol a-a a-c a-t aaa aac aae aaf aag aak aal aao aat ac- aca acc ace acf acg ack acl aco act aea aec aee aef aeg aek ael aeo aet af- afa afc afe aff afg afk afl afo aft ag- aga agc age agf agg agk agl ago agt aka akc ake akg akk akl ako al- ala alc ale alf alg alk all alo alt aoa aoc aoe aof aog aok aol aoo aot at- ata atc ate atf atg atl ato att c-- caa cac cae caf cag cak cal cao cat cca ccc cce ccf ccg cck ccl cco cct ce- cea cec cee cef ceg cek cel ceo cet cfa cfc cfe cff cfg cfk cfl cfo cft cga cgc cge cgg cgl cgo cgt cka ckc cko ckt cl- cla clc cle clf clg clk cll clo clt co- coa coc coe cof cog cok col coo cot cta ctc cte ctf ctg ctk ctl cto ctt eaa eac eae eaf eag eak eal eao eat ec- eca ecc ece ecf ecg eck ecl eco ect eea eec eee eef eeg eek eel eeo eet ef- efa efc efe eff efg efl efo eft ega egc ege egf egg egl ego egt eka ekc eke ekf ekg ekl eko ekt ela elc ele elf elg elk ell elo elt eo- eoa eoc eoe eof eog eok eol eoo eot eta etc ete etf etg etk etl eto ett faa fac fae faf fag fak fal fao fat fca fcc fce fcf fcg fck fcl fco fct fea fec fee fef feg fek fel feo fet ffa ffc ffe fff ffg ffk ffl ffo fft fga fgc fge fgf fgg fgl fgt fka fkc fkf fkg fkk fkl fkt fla flc fle flf flg fll flo flt foa foc foe fof fog fok fol foo fot fta ftc fte ftf ftg ftk ftl fto ftt gaa gac gae gaf gag gak gal gao gat gca gcc gce gcf gcg gck gcl gco gct ge- gea gec gee gef geg gek gel geo get gfa gfc gfe gff gfk gfl gfo gft gga ggc ggg ggo ggt gka gko gkt gla glc gle glf glg glk gll glo glt goa goc goe gof gog gok gol goo got gta gtc gte gtf gtg gtk gtl gto gtt k-t ka- kaa kac kae kaf kag kak kal kao kat kca kcc kce kcg kck kcl kct ke- kea kec kee kef keg kek kel keo ket kfa kfc kff kfg kfo kga kgc kgf kgl kgo kkc kke kkk kkl kkt kl- kla klc klf klg klo klt koa koc koe kof kog kok kol koo kot kta ktc kte ktf ktg ktk ktl kto ktt la- laa lac lae laf lag lak lal lao lat lca lcc lce lcf lcg lck lcl lco lct lea lec lee lef leg lek lel leo let lfa lfc lfe lff lfg lfk lfl lfo lft lga lgc lge lgf lgg lgk lgl lgo lgt lka lkg lkl lkt lla llc lle llf llg llk lll llo llt loa loc loe lof log lok lol loo lot lta ltc lte ltf ltg ltk ltl lto ltt oaa oac oae oaf oag oak oal oao oat oc- oca occ ocf ocg ock ocl oco oct oea oec oee oef oeg oel oeo oet of- ofa ofc ofe off ofg ofl ofo oft oga ogc oge ogf ogg ogl ogo ogt oka okc oke okg okk okl oko ola olc ole olf olg olk oll olo olt oo- ooa ooc oof oog ook ool ooo oot ot- ota otc ote otf otg otk otl oto ott taa tac tae taf tag tak tal tao tat tca tcc tce tcf tcg tck tcl tco tct te- tea tec tee tef teg tek tel teo tet tfa tfc tfe tff tfg tfk tfl tfo tft tga tgc tge tgf tgg tgk tgl tgo tgt tka tkc tke tkg tkk tkl tko tkt tla tlc tle tlf tlg tlk tll tlo tlt to- toa toc toe tof tog tok tol too tot tta ttc tte ttf ttg ttk ttl tto ttt