a-a a-c a-z aaa aac aao aar aay aaz ac- aca acc aco acr acy acz aoa aoc aoo aor ar- ara arc aro arr ary arz ay- aya ayc ayo ayr ayz az- aza azo azy azz c-- caa cac cao car cay caz cca ccc cco ccr ccz co- coa coc coo cor coy coz cra crc cro crr cry crz cya cyc cyo cyr cz- czc czo oaa oac oao oar oc- oca occ oco ocr ocz oo- ooa ooc ooo oor or- ora orc oro orr ory orz oya oyo oza ozo ozz ra- raa rac rao rar ray raz rca rcc rco rcr roa roc roo ror roy roz rra rrc rrr ry- rya ryc ryo ryr ryy ryz rza rzo rzy yaa yac yao yar yay yaz yca ycc yco ycy yoc yoo yor yoy yra yrc yro yyc yyy yyz yzr yzy zaa zac zao zar zay zaz zco zo- zoa zoc zoo zor zro zzr zzy zzz