-er ddd dde ddh ddk ddo ddr ddz de- ded dee deh dek deo der dez dh- dhd dhe dhh dhk dho dhr dke dkk dko dkr dod doe doh dok doo dor doz drd dre drk dro drr drz dzd dze dzo dzr ed- edd ede edh edk edo edr eed eee eek eeo eer ehd ehe ehh eho ehr ekd eke ekh eko ekr eo- eod eoe eoh eok eoo eor erd ere erh erk ero err erz eze ezh ezo ezr ezz hdd hde hdh hdk hdo hdr hdz he- hed hee heh hek heo her hez hhd hhe hhh hhk hho hhr hhz hkd hkh hkk hko hkr hod hoe hoh hok hoo hor hr- hrd hre hrh hrk hro hrr hrz hzd hze hzo k-z kde kdh kdk kdo kdr ke- ked kee keh kek keo ker kez khe khh khk kho khr khz kke kkh kkk kkr kod koe koh kok koo kor koz krd krk kro krr kzo odd ode odh odo odr oed oee oeh oeo oer ohd ohe ohh oho ohr okd oke okk oko okr oo- ood ooh ook ooo oor or- ord ore orh ork oro orr orz oze ozo ozz rdd rde rdh rdo rdr re- red ree reh rek reo rer rez rh- rhd rhe rhh rho rhr rke rkk rko rkz rod roe roh rok roo ror roz rrd rrh rrk rrr rze rzo zed zee zeh zek zeo zer zez zhe zho zhr zo- zod zoe zok zoo zor zrh zro zzr zzz