a-a aaa aad aah aak aao aar ad- ada add adh adk ado adr aha ahd ahh ahk aho ahr aka akd akh akk ako akr aoa aod aoh aok aoo aor ar- ara ard arh ark aro arr daa dad dah dak dao dar dda ddd ddh ddk ddo ddr dh- dha dhd dhh dhk dho dhr dka dkk dko dkr doa dod doh dok doo dor dra drd drk dro drr haa had hah hak hao har hda hdd hdh hdk hdo hdr hha hhd hhh hhk hho hhr hka hkd hkh hkk hko hkr hoa hod hoh hok hoo hor hr- hra hrd hrh hrk hro hrr ka- kaa kad kah kak kao kar kda kdh kdk kdo kdr kha khh khk kho khr kkh kkk kkr koa kod koh kok koo kor kra krd krk kro krr oaa oad oah oak oao oar oda odd odh odo odr oha ohd ohh oho ohr oka okd okk oko okr oo- ooa ood ooh ook ooo oor or- ora ord orh ork oro orr ra- raa rad rah rak rao rar rda rdd rdh rdo rdr rh- rha rhd rhh rho rhr rkk rko roa rod roh rok roo ror rra rrd rrh rrk rrr