-er a-a aaa aad aae aao aar aav ad- ada add ade ado adr adv aea aed aee aeo aer aev aoa aod aoe aoo aor aov ar- ara ard are aro arr arv av- ava avd ave avo avr daa dad dae dao dar dav dda ddd dde ddo ddr de- dea ded dee deo der dev doa dod doe doo dor dov dra drd dre dro drr drv dva dvd dve dvr eaa ead eae eao ear eav ed- eda edd ede edo edr eea eed eee eeo eer eev eo- eoa eod eoe eoo eor era erd ere ero err erv eva evd eve evo evr evv oaa oad oae oao oar oav oda odd ode odo odr odv oea oed oee oeo oer oo- ooa ood ooo oor oov or- ora ord ore oro orr orv ov- ova ovd ove ovo ovv ra- raa rad rae rao rar rav rda rdd rde rdo rdr rdv re- rea red ree reo rer rev roa rod roe roo ror rov rra rrd rrr rva rvd rve rvo rvr rvv v-a v-e vaa vad vae vao var vav vdd vde vdo vdr vdv vea ved vee veo ver voa vod voe voo vor vov vra vrd vre vrr vva vvo vvr vvv