-er -ol c-- ccc cce cck ccl cco ccp ccr ccs cct ce- cec cee cek cel ceo cep cer ces cet ckc cko cks ckt cl- clc cle clk cll clo clp clr cls clt co- coc coe cok col coo cop cor cos cot cpc cpe cpk cpl cpo cpp cpr cps cpt crc cre crk crl cro crp crr crs crt csc cse csk csl cso csp csr css cst ctc cte ctk ctl cto ctp ctr cts ctt ec- ecc ece eck ecl eco ecr ecs ect eec eee eek eel eeo eep eer ees eet ekc eke ekl eko ekp ekr eks ekt elc ele elk ell elo elp elr els elt eo- eoc eoe eok eol eoo eop eor eos eot ep- epc epe epl epo epp epr eps ept erc ere erk erl ero erp err ers ert es- esc ese esk esl eso esp esr ess est etc ete etk etl eto etp etr ets ett k-t kcc kce kck kcl kcp kcr kcs kct ke- kec kee kek kel keo kep ker kes ket kkc kke kkk kkl kkp kkr kks kkt kl- klc klo klr kls klt koc koe kok kol koo kop kor kos kot kpc kpe kpk kpl kpo kpp kpr kps kpt krc krk krl kro krp krr krs krt ksc kse ksk ksl kso ksp ksr kss kst ktc kte ktk ktl kto ktp ktr kts ktt l-p lcc lce lck lcl lco lcp lcr lcs lct lec lee lek lel leo lep ler les let lkl lkp lkr lks lkt llc lle llk lll llo llp llr lls llt loc loe lok lol loo lop lor los lot lpc lpe lpk lpl lpo lpp lpr lps lpt lrc lrk lro lrp lrr lrs lrt lsc lse lsk lsl lso lsp lsr lss lst ltc lte ltk ltl lto ltp ltr lts ltt oc- occ ock ocl oco ocp ocr ocs oct oec oee oel oeo oep oer oes oet okc oke okk okl oko okp okr oks olc ole olk oll olo olp ols olt oo- ooc ook ool ooo oop oor oos oot op- opc ope opk opl opo opp opr ops opt or- orc ore ork orl oro orp orr ors ort os- osc ose osk osl oso osp osr oss ost ot- otc ote otk otl oto otp otr ots ott p-p pcc pce pck pcl pco pcp pcr pcs pct pec pee pek pel peo pep per pes pet pkc pke pkl pko pkp pkr pks pkt plc ple plk pll plo plp plr pls plt poc poe pok pol poo pop por pos pot ppc ppe ppk ppl ppo ppp ppr pps ppt prc pre prk prl pro prp prr prs prt ps- psc pse psk psl pso psp psr pss pst pt- ptc pte ptk ptl pto ptp ptr pts ptt rcc rce rcl rco rcp rcr rcs rct re- rec ree rek rel reo rep rer res ret rkc rke rkk rko rkp rks rkt rlc rle rll rlo rlp rlr rls rlt roc roe rok rol roo rop ror ros rot rpc rpe rpk rpl rpo rpp rpr rps rpt rrc rrk rrl rrp rrr rrs rrt rsc rse rsk rsl rso rsp rsr rss rst rtc rte rtk rtl rto rtp rtr rts rtt scc sce sck scl sco scp scr scs sct se- sec see sek sel seo sep ser ses set sk- skc ske skk skl sko skp skr sks skt slc sle slk sll slo slp slr sls slt soc soe sok sol soo sop sor sos sot spc spe spk spl spo spp spr sps spt sr- src sre srk srl sro srp srr srs srt ss- ssc sse ssk ssl sso ssp ssr sss sst stc ste stk stl sto stp str sts stt tcc tce tck tcl tco tcp tcr tcs tct te- tec tee tek tel teo tep ter tes tet tkc tke tkk tkl tko tkp tkr tks tkt tlc tle tlk tll tlo tlp tlr tls tlt to- toc toe tok tol too top tor tos tot tpc tpe tpk tpl tpo tpp tpr tps tpt trc tre trk trl tro trp trr trs trt tsc tse tsk tsl tso tsp tsr tss tst ttc tte ttk ttl tto ttp ttr tts ttt