a-a a-c a-z aaa aac aak aar aas aau aaz ac- aca acc ack acr acs acu acz aka akc akk akr aks aku ar- ara arc ark arr ars aru arz as- asa asc ask asr ass asu asz au- aua auc auk aur aus auz az- aza azs azu azz c-- caa cac cak car cas cau caz cca ccc cck ccr ccs ccu ccz cka ckc cks cra crc crk crr crs cru crz csa csc csk csr css csu csz cua cuc cuk cur cus cuu cuz cz- czc czk k-z ka- kaa kac kak kar kas kau kaz kca kcc kck kcr kcs kcu kkc kkk kkr kks kku kra krc krk krr krs kru ksa ksc ksk ksr kss ksu kuc kuk kur kus kuu ra- raa rac rak rar ras rau raz rca rcc rcr rcs rcu rkc rkk rks rku rkz rra rrc rrk rrr rrs rru rsa rsc rsk rsr rss rsu rua ruc ruk rur rus ruu ruz rza saa sac sak sar sas sau saz sca scc sck scr scs scu sk- ska skc skk skr sks sku sr- sra src srk srr srs ss- ssa ssc ssk ssr sss ssu ssz sua suc suk sur sus suu suz sza szr szu ua- uaa uac uak uar uas uau uaz uca ucc uck ucr ucs ucu uka ukc ukk ukr uku ukz ur- ura urc urk urr urs uru urz usa usc usk usr uss usu usz uua uuc uur uus uuu uza uzu zaa zac zak zar zas zaz zcs zka zks zrs zsa zsu zsz zuc zuk zur zus zuz zzr zzs zzz