-er a-a aaa aae aag aah aao aar aax aea aee aeg aeh aeo aer aex ag- aga age agg agh ago agr agx aha ahe ahg ahh aho ahr ahx aoa aoe aog aoh aoo aor aox ar- ara are arg arh aro arr arx ax- axa axe axh axo axr axx eaa eae eag eah eao ear eax eea eee eeg eeo eer eex ega ege egg egh ego egr egx eha ehe ehg ehh eho ehr eo- eoa eoe eog eoh eoo eor era ere erg erh ero err ex- exa exe exh exo exr exx gaa gae gag gah gao gar ge- gea gee geg geh geo ger gex gga ggg ggh ggo ggr gha ghe ghg ghh gho ghr goa goe gog goh goo gor gox gra gre grg grh gro grr grx gxa haa hae hag hah hao har hax he- hea hee heg heh heo her hex hga hge hgg hgh hgo hgr hha hhe hhg hhh hho hhr hoa hoe hog hoh hoo hor hox hr- hra hre hrg hrh hro hrr oaa oae oag oah oao oar oax oea oee oeg oeh oeo oer oex oga oge ogg ogh ogo ogx oha ohe ohg ohh oho ohr oo- ooa oog ooh ooo oor oox or- ora ore org orh oro orr orx ox- oxa oxo oxx ra- raa rae rag rah rao rar rax re- rea ree reg reh reo rer rex rga rge rgg rgh rgo rgr rgx rh- rha rhe rhg rhh rho rhr roa roe rog roh roo ror rox rra rrg rrh rrr rxr xaa xag xar xee xeg xer xex xge xoa xog xoo xor xox xrx xxo xxx