-al -ol a-a a-c aaa aac aaf aak aal aao aar ac- aca acc acf ack acl aco acr af- afa afc aff afk afl afo afr aka akc akk akl ako akr al- ala alc alf alk all alo alr aoa aoc aof aok aol aoo aor ar- ara arc arf ark arl aro arr c-- caa cac caf cak cal cao car cca ccc ccf cck ccl cco ccr cfa cfc cff cfk cfl cfo cfr cka ckc cko cl- cla clc clf clk cll clo clr co- coa coc cof cok col coo cor cra crc crf crk crl cro crr faa fac faf fak fal fao far fca fcc fcf fck fcl fco fcr ffa ffc fff ffk ffl ffo ffr fka fkc fkf fkk fkl fla flc flf fll flo flr foa foc fof fok fol foo for fra frc frf frk frl fro frr ka- kaa kac kaf kak kal kao kar kca kcc kck kcl kcr kfa kfc kff kfo kkc kkk kkl kkr kl- kla klc klf klo klr koa koc kof kok kol koo kor kra krc krf krk krl kro krr la- laa lac laf lak lal lao lar lca lcc lcf lck lcl lco lcr lfa lfc lff lfk lfl lfo lfr lka lkl lkr lla llc llf llk lll llo llr loa loc lof lok lol loo lor lra lrc lrf lrk lro lrr oaa oac oaf oak oal oao oar oc- oca occ ocf ock ocl oco ocr of- ofa ofc off ofl ofo ofr oka okc okk okl oko okr ola olc olf olk oll olo oo- ooa ooc oof ook ool ooo oor or- ora orc orf ork orl oro orr ra- raa rac raf rak ral rao rar rca rcc rcf rcl rco rcr rfa rfc rff rfk rfl rfo rfr rkc rkf rkk rko rla rlc rlf rll rlo rlr roa roc rof rok rol roo ror rra rrc rrf rrk rrl rrr