a-a a-c a-z aaa aac aaf aak aao aar aaw aaz ac- aca acc acf ack aco acr acw acz af- afa afc aff afk afo afr afw afz aka akc akk ako akr akw aoa aoc aof aok aoo aor aow ar- ara arc arf ark aro arr arw arz aw- awa awc awf awk awo awr aww az- aza azf azo azw azz c-- caa cac caf cak cao car caw caz cca ccc ccf cck cco ccr ccw ccz cfa cfc cff cfk cfo cfr cfw cfz cka ckc cko ckw co- coa coc cof cok coo cor cow coz cra crc crf crk cro crr crw crz cw- cwa cwc cwk cwo cwr cz- czc czk czo czw faa fac faf fak fao far faw faz fca fcc fcf fck fco fcr fcw fcz ffa ffc fff ffk ffo ffr ffw ffz fka fkc fkf fkk foa foc fof fok foo for fow foz fra frc frf frk fro frr frw fwa fwc fwf fwo k-z ka- kaa kac kaf kak kao kar kaw kaz kca kcc kck kcr kfa kfc kff kfo kfw kkc kkk kkr koa koc kof kok koo kor kow koz kra krc krf krk kro krr krw kw- kwa kwc kwf kwk kwo kww kzo kzw oaa oac oaf oak oao oar oaw oc- oca occ ocf ock oco ocr ocw ocz of- ofa ofc off ofo ofr ofw ofz oka okc okk oko okr okw oo- ooa ooc oof ook ooo oor oow or- ora orc orf ork oro orr orz owa owc owf owk owo oww oza ozo ozw ozz ra- raa rac raf rak rao rar raw raz rca rcc rcf rco rcr rcw rfa rfc rff rfk rfo rfr rfw rfz rkc rkf rkk rko rkz roa roc rof rok roo ror row roz rra rrc rrf rrk rrr rwa rwc rwf rwr rza rzo waa wac waf wak wao war waw waz wca wcc wcf wck wco wcr wcw wfa wfc wff wfk wfo wfr wfw wka wkc wkf wko wkr wkw woa woc wof wok woo wor wow woz wr- wra wrc wrf wrk wro wrr wrw wwa wwc wwf wwo www wzc zaa zac zaf zak zao zar zaz zco zfa zfc zfr zka zo- zoa zoc zof zok zoo zor zow zro zzr zzz