a-a aaa aad aah aao aar ad- ada add adh ado adr aha ahd ahh aho ahr aoa aod aoh aoo aor ar- ara ard arh aro arr daa dad dah dao dar dda ddd ddh ddo ddr dh- dha dhd dhh dho dhr doa dod doh doo dor dra drd dro drr haa had hah hao har hda hdd hdh hdo hdr hha hhd hhh hho hhr hoa hod hoh hoo hor hr- hra hrd hrh hro hrr oaa oad oah oao oar oda odd odh odo odr oha ohd ohh oho ohr oo- ooa ood ooh ooo oor or- ora ord orh oro orr ra- raa rad rah rao rar rda rdd rdh rdo rdr rh- rha rhd rhh rho rhr roa rod roh roo ror rra rrd rrh rrr