-er -ol c-- ccc cce cck ccl cco ccp ccr cct ce- cec cee cek cel ceo cep cer cet ckc cko ckt cl- clc cle clk cll clo clp clr clt co- coc coe cok col coo cop cor cot cpc cpe cpk cpl cpo cpp cpr cpt crc cre crk crl cro crp crr crt ctc cte ctk ctl cto ctp ctr ctt ec- ecc ece eck ecl eco ecr ect eec eee eek eel eeo eep eer eet ekc eke ekl eko ekp ekr ekt elc ele elk ell elo elp elr elt eo- eoc eoe eok eol eoo eop eor eot ep- epc epe epl epo epp epr ept erc ere erk erl ero erp err ert etc ete etk etl eto etp etr ett k-t kcc kce kck kcl kcp kcr kct ke- kec kee kek kel keo kep ker ket kkc kke kkk kkl kkp kkr kkt kl- klc klo klr klt koc koe kok kol koo kop kor kot kpc kpe kpk kpl kpo kpp kpr kpt krc krk krl kro krp krr krt ktc kte ktk ktl kto ktp ktr ktt l-p lcc lce lck lcl lco lcp lcr lct lec lee lek lel leo lep ler let lkl lkp lkr lkt llc lle llk lll llo llp llr llt loc loe lok lol loo lop lor lot lpc lpe lpk lpl lpo lpp lpr lpt lrc lrk lro lrp lrr lrt ltc lte ltk ltl lto ltp ltr ltt oc- occ ock ocl oco ocp ocr oct oec oee oel oeo oep oer oet okc oke okk okl oko okp okr olc ole olk oll olo olp olt oo- ooc ook ool ooo oop oor oot op- opc ope opk opl opo opp opr opt or- orc ore ork orl oro orp orr ort ot- otc ote otk otl oto otp otr ott p-p pcc pce pck pcl pco pcp pcr pct pec pee pek pel peo pep per pet pkc pke pkl pko pkp pkr pkt plc ple plk pll plo plp plr plt poc poe pok pol poo pop por pot ppc ppe ppk ppl ppo ppp ppr ppt prc pre prk prl pro prp prr prt pt- ptc pte ptk ptl pto ptp ptr ptt rcc rce rcl rco rcp rcr rct re- rec ree rek rel reo rep rer ret rkc rke rkk rko rkp rkt rlc rle rll rlo rlp rlr rlt roc roe rok rol roo rop ror rot rpc rpe rpk rpl rpo rpp rpr rpt rrc rrk rrl rrp rrr rrt rtc rte rtk rtl rto rtp rtr rtt tcc tce tck tcl tco tcp tcr tct te- tec tee tek tel teo tep ter tet tkc tke tkk tkl tko tkp tkr tkt tlc tle tlk tll tlo tlp tlr tlt to- toc toe tok tol too top tor tot tpc tpe tpk tpl tpo tpp tpr tpt trc tre trk trl tro trp trr trt ttc tte ttk ttl tto ttp ttr ttt