-al -ol a-a a-c a-t aaa aac aak aal aao aar aas aat ac- aca acc ack acl aco acr acs act aka akc akk akl ako akr aks al- ala alc alk all alo alr als alt aoa aoc aok aol aoo aor aos aot ar- ara arc ark arl aro arr ars art as- asa asc ask asl aso asr ass ast at- ata atc atl ato atr ats att c-- caa cac cak cal cao car cas cat cca ccc cck ccl cco ccr ccs cct cka ckc cko cks ckt cl- cla clc clk cll clo clr cls clt co- coa coc cok col coo cor cos cot cra crc crk crl cro crr crs crt csa csc csk csl cso csr css cst cta ctc ctk ctl cto ctr cts ctt k-t ka- kaa kac kak kal kao kar kas kat kca kcc kck kcl kcr kcs kct kkc kkk kkl kkr kks kkt kl- kla klc klo klr kls klt koa koc kok kol koo kor kos kot kra krc krk krl kro krr krs krt ksa ksc ksk ksl kso ksr kss kst kta ktc ktk ktl kto ktr kts ktt la- laa lac lak lal lao lar las lat lca lcc lck lcl lco lcr lcs lct lka lkl lkr lks lkt lla llc llk lll llo llr lls llt loa loc lok lol loo lor los lot lra lrc lrk lro lrr lrs lrt lsa lsc lsk lsl lso lsr lss lst lta ltc ltk ltl lto ltr lts ltt oaa oac oak oal oao oar oas oat oc- oca occ ock ocl oco ocr ocs oct oka okc okk okl oko okr oks ola olc olk oll olo ols olt oo- ooa ooc ook ool ooo oor oos oot or- ora orc ork orl oro orr ors ort os- osa osc osk osl oso osr oss ost ot- ota otc otk otl oto otr ots ott ra- raa rac rak ral rao rar ras rat rca rcc rcl rco rcr rcs rct rkc rkk rko rks rkt rla rlc rll rlo rlr rls rlt roa roc rok rol roo ror ros rot rra rrc rrk rrl rrr rrs rrt rsa rsc rsk rsl rso rsr rss rst rta rtc rtk rtl rto rtr rts rtt saa sac sak sal sao sar sas sat sca scc sck scl sco scr scs sct sk- ska skc skk skl sko skr sks skt sla slc slk sll slo slr sls slt soa soc sok sol soo sor sos sot sr- sra src srk srl sro srr srs srt ss- ssa ssc ssk ssl sso ssr sss sst sta stc stk stl sto str sts stt taa tac tak tal tao tar tas tat tca tcc tck tcl tco tcr tcs tct tka tkc tkk tkl tko tkr tks tkt tla tlc tlk tll tlo tlr tls tlt to- toa toc tok tol too tor tos tot tra trc trk trl tro trr trs trt tsa tsc tsk tsl tso tsr tss tst tta ttc ttk ttl tto ttr tts ttt