-hou a-ha aaaa aaah aaar aaav aaha aaoo aara aaro aaru aava ahah ahar ahau ahha ahoa ahor ahra ahrr ahua ahva aoah aora arah arar arau arh- aroa aroo aror arr- arra arrh arro arrr arru arua arva arvo auaa aur- aura auro avao avar avor avou avra avro avur avva avvo haar haha haho haor hara harh haro harr haru harv hau- hava hhaa hhhh hoar hoha hoho hoor hora horo horr hour hova huah huhu huor hura huro hurr huru hvar oaau oahu oara ohau ohho ohoh ohra ooaa ooha ooho oooh oooo oora orah orao orar orav oro- oror orra orro orvr our- oura ouro ouu- ovar ovo- ovoo ovra raha rahr rahu raoh rara raro raua rava rhau rhoa rhoh roar roha rohr rohu roor rora roro roru roua rouh rova rovo rrah rrrr ruah ruhh ruhr rura ruro ruru ruvu rvvh uaru uaua uhoh uhuh uor- uovo urao urau urho uro- uroa uroo urra urrh urur urva uuuu uv-a uvaa uvvu vaar vaho vara varr varu vava vhhh voar voho vohu voor vor- vora voro voru vouh vour vrav vvvv