-al -ol a-a a-c a-t aaa aac aak aal aao aas aat ac- aca acc ack acl aco acs act aka akc akk akl ako aks al- ala alc alk all alo als alt aoa aoc aok aol aoo aos aot as- asa asc ask asl aso ass ast at- ata atc atl ato ats att c-- caa cac cak cal cao cas cat cca ccc cck ccl cco ccs cct cka ckc cko cks ckt cl- cla clc clk cll clo cls clt co- coa coc cok col coo cos cot csa csc csk csl cso css cst cta ctc ctk ctl cto cts ctt k-t ka- kaa kac kak kal kao kas kat kca kcc kck kcl kcs kct kkc kkk kkl kks kkt kl- kla klc klo kls klt koa koc kok kol koo kos kot ksa ksc ksk ksl kso kss kst kta ktc ktk ktl kto kts ktt la- laa lac lak lal lao las lat lca lcc lck lcl lco lcs lct lka lkl lks lkt lla llc llk lll llo lls llt loa loc lok lol loo los lot lsa lsc lsk lsl lso lss lst lta ltc ltk ltl lto lts ltt oaa oac oak oal oao oas oat oc- oca occ ock ocl oco ocs oct oka okc okk okl oko oks ola olc olk oll olo ols olt oo- ooa ooc ook ool ooo oos oot os- osa osc osk osl oso oss ost ot- ota otc otk otl oto ots ott saa sac sak sal sao sas sat sca scc sck scl sco scs sct sk- ska skc skk skl sko sks skt sla slc slk sll slo sls slt soa soc sok sol soo sos sot ss- ssa ssc ssk ssl sso sss sst sta stc stk stl sto sts stt taa tac tak tal tao tas tat tca tcc tck tcl tco tcs tct tka tkc tkk tkl tko tks tkt tla tlc tlk tll tlo tls tlt to- toa toc tok tol too tos tot tsa tsc tsk tsl tso tss tst tta ttc ttk ttl tto tts ttt