a-a a-z aaa aak aao aar aaw aaz aka akk ako akr akw aoa aok aoo aor aow ar- ara ark aro arr arw arz aw- awa awk awo awr aww az- aza azo azw azz k-z ka- kaa kak kao kar kaw kaz kkk kkr koa kok koo kor kow koz kra krk kro krr krw kw- kwa kwk kwo kww kzo kzw oaa oak oao oar oaw oka okk oko okr okw oo- ooa ook ooo oor oow or- ora ork oro orr orz owa owk owo oww oza ozo ozw ozz ra- raa rak rao rar raw raz rkk rko rkz roa rok roo ror row roz rra rrk rrr rwa rwr rza rzo waa wak wao war waw waz wka wko wkr wkw woa wok woo wor wow woz wr- wra wrk wro wrr wrw wwa wwo www zaa zak zao zar zaz zka zo- zoa zok zoo zor zow zro zzr zzz