a-a a-c a-z aaa aac aao aau aay aaz ac- aca acc aco acu acy acz aoa aoc aoo aou au- aua auc auo auz ay- aya ayc ayo ayu ayz az- aza azo azu azy azz c-- caa cac cao cau cay caz cca ccc cco ccu ccz co- coa coc coo cou coy coz cua cuc cuo cuu cuy cuz cya cyc cyo cz- czc czo oaa oac oao oau oc- oca occ oco ocu ocz oo- ooa ooc ooo ou- oua ouc ouo oya oyo oza ozo ozu ozz ua- uaa uac uao uau uay uaz uca ucc uco ucu uoa uoc uoo uua uuc uuu uyc uyo uyu uza uzo uzu yaa yac yao yau yay yaz yca ycc yco ycu ycy yoc yoo you yoy yua yuo yuu yuy yyc yyu yyy yyz yzu yzy zaa zac zao zay zaz zco zo- zoa zoc zoo zou zuc zuz zzy zzz