-al -ol a-a a-c a-t aaa aac aae aaf aak aal aao aat ac- aca acc ace acf ack acl aco act aea aec aee aef aek ael aeo aet af- afa afc afe aff afk afl afo aft aka akc ake akk akl ako al- ala alc ale alf alk all alo alt aoa aoc aoe aof aok aol aoo aot at- ata atc ate atf atl ato att c-- caa cac cae caf cak cal cao cat cca ccc cce ccf cck ccl cco cct ce- cea cec cee cef cek cel ceo cet cfa cfc cfe cff cfk cfl cfo cft cka ckc cko ckt cl- cla clc cle clf clk cll clo clt co- coa coc coe cof cok col coo cot cta ctc cte ctf ctk ctl cto ctt eaa eac eae eaf eak eal eao eat ec- eca ecc ece ecf eck ecl eco ect eea eec eee eef eek eel eeo eet ef- efa efc efe eff efl efo eft eka ekc eke ekf ekl eko ekt ela elc ele elf elk ell elo elt eo- eoa eoc eoe eof eok eol eoo eot eta etc ete etf etk etl eto ett faa fac fae faf fak fal fao fat fca fcc fce fcf fck fcl fco fct fea fec fee fef fek fel feo fet ffa ffc ffe fff ffk ffl ffo fft fka fkc fkf fkk fkl fkt fla flc fle flf fll flo flt foa foc foe fof fok fol foo fot fta ftc fte ftf ftk ftl fto ftt k-t ka- kaa kac kae kaf kak kal kao kat kca kcc kce kck kcl kct ke- kea kec kee kef kek kel keo ket kfa kfc kff kfo kkc kke kkk kkl kkt kl- kla klc klf klo klt koa koc koe kof kok kol koo kot kta ktc kte ktf ktk ktl kto ktt la- laa lac lae laf lak lal lao lat lca lcc lce lcf lck lcl lco lct lea lec lee lef lek lel leo let lfa lfc lfe lff lfk lfl lfo lft lka lkl lkt lla llc lle llf llk lll llo llt loa loc loe lof lok lol loo lot lta ltc lte ltf ltk ltl lto ltt oaa oac oae oaf oak oal oao oat oc- oca occ ocf ock ocl oco oct oea oec oee oef oel oeo oet of- ofa ofc ofe off ofl ofo oft oka okc oke okk okl oko ola olc ole olf olk oll olo olt oo- ooa ooc oof ook ool ooo oot ot- ota otc ote otf otk otl oto ott taa tac tae taf tak tal tao tat tca tcc tce tcf tck tcl tco tct te- tea tec tee tef tek tel teo tet tfa tfc tfe tff tfk tfl tfo tft tka tkc tke tkk tkl tko tkt tla tlc tle tlf tlk tll tlo tlt to- toa toc toe tof tok tol too tot tta ttc tte ttf ttk ttl tto ttt