a-a a-c a-z aaa aac aaf aak aar aas aay aaz ac- aca acc acf ack acr acs acy acz af- afa afc aff afk afr afs afy afz aka akc akk akr aks ar- ara arc arf ark arr ars ary arz as- asa asc asf ask asr ass asy asz ay- aya ayc ayf ayk ayr ays ayz az- aza azf azs azy azz c-- caa cac caf cak car cas cay caz cca ccc ccf cck ccr ccs ccz cfa cfc cff cfk cfr cfs cfz cka ckc cks cky cra crc crf crk crr crs cry crz csa csc csf csk csr css csy csz cya cyc cyf cyk cyr cys cz- czc czk faa fac faf fak far fas fay faz fca fcc fcf fck fcr fcs fcy fcz ffa ffc fff ffk ffr ffs ffy ffz fka fkc fkf fkk fra frc frf frk frr frs fry fsa fsc fsf fsk fsr fss fy- fya fyc fyk fyz k-z ka- kaa kac kaf kak kar kas kay kaz kca kcc kck kcr kcs kfa kfc kff kfs kkc kkk kkr kks kky kra krc krf krk krr krs kry ksa ksc ksf ksk ksr kss kya kyc kyr kys kyz kzy ra- raa rac raf rak rar ras ray raz rca rcc rcf rcr rcs rfa rfc rff rfk rfr rfs rfz rkc rkf rkk rks rky rkz rra rrc rrf rrk rrr rrs rsa rsc rsf rsk rsr rss ry- rya ryc ryf ryk ryr rys ryy ryz rza rzy saa sac saf sak sar sas say saz sca scc scf sck scr scs sfa sfc sff sfk sfr sfs sfz sk- ska skc skf skk skr sks sky sr- sra src srf srk srr srs sry ss- ssa ssc ssf ssk ssr sss ssz sy- sya syc syk syr sys sza szr yaa yac yaf yak yar yas yay yaz yca ycc ycf ycs ycy yfa yfc yff yfr yfs yka ykk yra yrc yrf yrs ysa ysc ysk ysr yss ysy ysz yyc yyf yys yyy yyz yzf yzr yzy zaa zac zaf zak zar zas zay zaz zcs zfa zfc zfr zfs zfy zka zks zrs zsa zsz zzr zzs zzy zzz