-al a-a a-c a-t aaa aac aae aak aal aas aat ac- aca acc ace ack acl acs act aea aec aee aek ael aes aet aka akc ake akk akl aks al- ala alc ale alk all als alt as- asa asc ase ask asl ass ast at- ata atc ate atl ats att c-- caa cac cae cak cal cas cat cca ccc cce cck ccl ccs cct ce- cea cec cee cek cel ces cet cka ckc cks ckt cl- cla clc cle clk cll cls clt csa csc cse csk csl css cst cta ctc cte ctk ctl cts ctt eaa eac eae eak eal eas eat ec- eca ecc ece eck ecl ecs ect eea eec eee eek eel ees eet eka ekc eke ekl eks ekt ela elc ele elk ell els elt es- esa esc ese esk esl ess est eta etc ete etk etl ets ett k-t ka- kaa kac kae kak kal kas kat kca kcc kce kck kcl kcs kct ke- kea kec kee kek kel kes ket kkc kke kkk kkl kks kkt kl- kla klc kls klt ksa ksc kse ksk ksl kss kst kta ktc kte ktk ktl kts ktt la- laa lac lae lak lal las lat lca lcc lce lck lcl lcs lct lea lec lee lek lel les let lka lkl lks lkt lla llc lle llk lll lls llt lsa lsc lse lsk lsl lss lst lta ltc lte ltk ltl lts ltt saa sac sae sak sal sas sat sca scc sce sck scl scs sct se- sea sec see sek sel ses set sk- ska skc ske skk skl sks skt sla slc sle slk sll sls slt ss- ssa ssc sse ssk ssl sss sst sta stc ste stk stl sts stt taa tac tae tak tal tas tat tca tcc tce tck tcl tcs tct te- tea tec tee tek tel tes tet tka tkc tke tkk tkl tks tkt tla tlc tle tlk tll tls tlt tsa tsc tse tsk tsl tss tst tta ttc tte ttk ttl tts ttt