a-a a-z aaa aad aah aao aar aaz ad- ada add adh ado adr adz aha ahd ahh aho ahr ahz aoa aod aoh aoo aor ar- ara ard arh aro arr arz az- aza azd azo azz daa dad dah dao dar daz dda ddd ddh ddo ddr ddz dh- dha dhd dhh dho dhr doa dod doh doo dor doz dra drd dro drr drz dza dzd dzo dzr haa had hah hao har haz hda hdd hdh hdo hdr hdz hha hhd hhh hho hhr hhz hoa hod hoh hoo hor hr- hra hrd hrh hro hrr hrz hzd hzo 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 orz oza ozo ozz ra- raa rad rah rao rar raz rda rdd rdh rdo rdr rh- rha rhd rhh rho rhr roa rod roh roo ror roz rra rrd rrh rrr rza rzo zaa zad zah zao zar zaz zha zho zhr zo- zoa zod zoo zor zrh zro zzr zzz