-al a-a a-c a-t aaa aac aae aaf aak aal aas aat ac- aca acc ace acf ack acl acs act aea aec aee aef aek ael aes aet af- afa afc afe aff afk afl afs aft aka akc ake akk akl aks al- ala alc ale alf alk all als alt as- asa asc ase asf ask asl ass ast at- ata atc ate atf atl ats att c-- caa cac cae caf cak cal cas cat cca ccc cce ccf cck ccl ccs cct ce- cea cec cee cef cek cel ces cet cfa cfc cfe cff cfk cfl cfs cft cka ckc cks ckt cl- cla clc cle clf clk cll cls clt csa csc cse csf csk csl css cst cta ctc cte ctf ctk ctl cts ctt eaa eac eae eaf eak eal eas eat ec- eca ecc ece ecf eck ecl ecs ect eea eec eee eef eek eel ees eet ef- efa efc efe eff efl efs eft eka ekc eke ekf ekl eks ekt ela elc ele elf elk ell els elt es- esa esc ese esf esk esl ess est eta etc ete etf etk etl ets ett faa fac fae faf fak fal fas fat fca fcc fce fcf fck fcl fcs fct fea fec fee fef fek fel fes fet ffa ffc ffe fff ffk ffl ffs fft fka fkc fkf fkk fkl fkt fla flc fle flf fll fls flt fsa fsc fse fsf fsk fsl fss fst fta ftc fte ftf ftk ftl fts ftt k-t ka- kaa kac kae kaf kak kal kas kat kca kcc kce kck kcl kcs kct ke- kea kec kee kef kek kel kes ket kfa kfc kff kfs kkc kke kkk kkl kks kkt kl- kla klc klf kls klt ksa ksc kse ksf ksk ksl kss kst kta ktc kte ktf ktk ktl kts ktt la- laa lac lae laf lak lal las lat lca lcc lce lcf lck lcl lcs lct lea lec lee lef lek lel les let lfa lfc lfe lff lfk lfl lfs lft lka lkl lks lkt lla llc lle llf llk lll lls llt lsa lsc lse lsf lsk lsl lss lst lta ltc lte ltf ltk ltl lts ltt saa sac sae saf sak sal sas sat sca scc sce scf sck scl scs sct se- sea sec see sef sek sel ses set sfa sfc sfe sff sfk sfl sfs sft sk- ska skc ske skf skk skl sks skt sla slc sle slf slk sll sls slt ss- ssa ssc sse ssf ssk ssl sss sst sta stc ste stf stk stl sts stt taa tac tae taf tak tal tas tat tca tcc tce tcf tck tcl tcs tct te- tea tec tee tef tek tel tes tet tfa tfc tfe tff tfk tfl tfs tft tka tkc tke tkk tkl tks tkt tla tlc tle tlf tlk tll tls tlt tsa tsc tse tsf tsk tsl tss tst tta ttc tte ttf ttk ttl tts ttt