-er a-a aaa aad aae aah aao aar aax ad- ada add ade adh ado adr adx aea aed aee aeh aeo aer aex aha ahd ahe ahh aho ahr ahx aoa aod aoe aoh aoo aor aox ar- ara ard are arh aro arr arx ax- axa axe axh axo axr axx daa dad dae dah dao dar dax dda ddd dde ddh ddo ddr ddx de- dea ded dee deh deo der dex dh- dha dhd dhe dhh dho dhr doa dod doe doh doo dor dox dra drd dre dro drr drx dxd dxo dxr dxx eaa ead eae eah eao ear eax ed- eda edd ede edh edo edr edx eea eed eee eeo eer eex eha ehd ehe ehh eho ehr eo- eoa eod eoe eoh eoo eor era erd ere erh ero err ex- exa exd exe exh exo exr exx haa had hae hah hao har hax hda hdd hde hdh hdo hdr hdx he- hea hed hee heh heo her hex hha hhd hhe hhh hho hhr hoa hod hoe hoh hoo hor hox hr- hra hrd hre hrh hro hrr hxd oaa oad oae oah oao oar oax oda odd ode odh odo odr oea oed oee oeh oeo oer oex oha ohd ohe ohh oho ohr oo- ooa ood ooh ooo oor oox or- ora ord ore orh oro orr orx ox- oxa oxo oxx ra- raa rad rae rah rao rar rax rda rdd rde rdh rdo rdr rdx re- rea red ree reh reo rer rex rh- rha rhd rhe rhh rho rhr roa rod roe roh roo ror rox rra rrd rrh rrr rxr xaa xad xar xda xde xdh xdr xed xee xer xex xhd xoa xod xoo xor xox xrd xrx xxo xxx