a-a a-z aaa aah aak aao aav aaz aha ahh ahk aho ahv ahz aka akh akk ako akv aoa aoh aok aoo aov av- ava avh avk avo avz az- aza azo azz haa hah hak hao hav haz hha hhh hhk hho hhv hhz hka hkh hkk hko hoa hoh hok hoo hov hv- hva hvk hvo hvv hzo k-z ka- kaa kah kak kao kav kaz kha khh khk kho khv khz kkh kkk kkv koa koh kok koo koz kva kvh kvk kvo kvv kzo oaa oah oak oao oav oha ohh oho oka okk oko oo- ooa ooh ook ooo oov ov- ova ovh ovo ovv oza ozo ozz v-a vaa vah vak vao vav vaz vh- vha vho vka voa voh vok voo vov voz vva vvo vvv vvz zaa zah zak zao zav zaz zha zho zka zo- zoa zok zoo zzz