-al -er -ol a-a a-c aaa aac aae aaf aak aal aao aar ac- aca acc ace acf ack acl aco acr aea aec aee aef aek ael aeo aer af- afa afc afe aff afk afl afo afr aka akc ake akk akl ako akr al- ala alc ale alf alk all alo alr aoa aoc aoe aof aok aol aoo aor ar- ara arc are arf ark arl aro arr c-- caa cac cae caf cak cal cao car cca ccc cce ccf cck ccl cco ccr ce- cea cec cee cef cek cel ceo cer cfa cfc cfe cff cfk cfl cfo cfr cka ckc cko cl- cla clc cle clf clk cll clo clr co- coa coc coe cof cok col coo cor cra crc cre crf crk crl cro crr eaa eac eae eaf eak eal eao ear ec- eca ecc ece ecf eck ecl eco ecr eea eec eee eef eek eel eeo eer ef- efa efc efe eff efl efo efr eka ekc eke ekf ekl eko ekr ela elc ele elf elk ell elo elr eo- eoa eoc eoe eof eok eol eoo eor era erc ere erf erk erl ero err faa fac fae faf fak fal fao far fca fcc fce fcf fck fcl fco fcr fea fec fee fef fek fel feo fer ffa ffc ffe fff ffk ffl ffo ffr fka fkc fkf fkk fkl fla flc fle flf fll flo flr foa foc foe fof fok fol foo for fra frc fre frf frk frl fro frr ka- kaa kac kae kaf kak kal kao kar kca kcc kce kck kcl kcr ke- kea kec kee kef kek kel keo ker kfa kfc kff kfo kkc kke kkk kkl kkr kl- kla klc klf klo klr koa koc koe kof kok kol koo kor kra krc krf krk krl kro krr la- laa lac lae laf lak lal lao lar lca lcc lce lcf lck lcl lco lcr lea lec lee lef lek lel leo ler lfa lfc lfe lff lfk lfl lfo lfr lka lkl lkr lla llc lle llf llk lll llo llr loa loc loe lof lok lol loo lor lra lrc lrf lrk lro lrr oaa oac oae oaf oak oal oao oar oc- oca occ ocf ock ocl oco ocr oea oec oee oef oel oeo oer of- ofa ofc ofe off ofl ofo ofr oka okc oke okk okl oko okr ola olc ole olf olk oll olo oo- ooa ooc oof ook ool ooo oor or- ora orc ore orf ork orl oro orr ra- raa rac rae raf rak ral rao rar rca rcc rce rcf rcl rco rcr re- rea rec ree ref rek rel reo rer rfa rfc rfe rff rfk rfl rfo rfr rkc rke rkf rkk rko rla rlc rle rlf rll rlo rlr roa roc roe rof rok rol roo ror rra rrc rrf rrk rrl rrr