-al -er -ol a-a a-c aaa aac aae aak aal aao aap aar ac- aca acc ace ack acl aco acp acr aea aec aee aek ael aeo aep aer aka akc ake akk akl ako akp akr al- ala alc ale alk all alo alp alr aoa aoc aoe aok aol aoo aop aor ap- apa apc ape apk apl apo app apr ar- ara arc are ark arl aro arp arr c-- caa cac cae cak cal cao cap car cca ccc cce cck ccl cco ccp ccr ce- cea cec cee cek cel ceo cep cer cka ckc cko cl- cla clc cle clk cll clo clp clr co- coa coc coe cok col coo cop cor cpa cpc cpe cpk cpl cpo cpp cpr cra crc cre crk crl cro crp crr eaa eac eae eak eal eao eap ear ec- eca ecc ece eck ecl eco ecr eea eec eee eek eel eeo eep eer eka ekc eke ekl eko ekp ekr ela elc ele elk ell elo elp elr eo- eoa eoc eoe eok eol eoo eop eor ep- epa epc epe epl epo epp epr era erc ere erk erl ero erp err ka- kaa kac kae kak kal kao kap kar kca kcc kce kck kcl kcp kcr ke- kea kec kee kek kel keo kep ker kkc kke kkk kkl kkp kkr kl- kla klc klo klr koa koc koe kok kol koo kop kor kpa kpc kpe kpk kpl kpo kpp kpr kra krc krk krl kro krp krr l-p la- laa lac lae lak lal lao lap lar lca lcc lce lck lcl lco lcp lcr lea lec lee lek lel leo lep ler lka lkl lkp lkr lla llc lle llk lll llo llp llr loa loc loe lok lol loo lop lor lpa lpc lpe lpk lpl lpo lpp lpr lra lrc lrk lro lrp lrr oaa oac oae oak oal oao oap oar oc- oca occ ock ocl oco ocp ocr oea oec oee oel oeo oep oer oka okc oke okk okl oko okp okr ola olc ole olk oll olo olp oo- ooa ooc ook ool ooo oop oor op- opa opc ope opk opl opo opp opr or- ora orc ore ork orl oro orp orr p-p paa pac pae pak pal pao pap par pca pcc pce pck pcl pco pcp pcr pea pec pee pek pel peo pep per pka pkc pke pkl pko pkp pkr pla plc ple plk pll plo plp plr poa poc poe pok pol poo pop por ppa ppc ppe ppk ppl ppo ppp ppr pra prc pre prk prl pro prp prr ra- raa rac rae rak ral rao rap rar rca rcc rce rcl rco rcp rcr re- rea rec ree rek rel reo rep rer rkc rke rkk rko rkp rla rlc rle rll rlo rlp rlr roa roc roe rok rol roo rop ror rpa rpc rpe rpk rpl rpo rpp rpr rra rrc rrk rrl rrp rrr