-er a-a aaa aae aag aah aao aap aar aax aea aee aeg aeh aeo aep aer aex ag- aga age agg agh ago agp agr agx aha ahe ahg ahh aho ahp ahr ahx aoa aoe aog aoh aoo aop aor aox ap- apa ape apg aph apo app apr apx ar- ara are arg arh aro arp arr arx ax- axa axe axh axo axp axr axx eaa eae eag eah eao eap ear eax eea eee eeg eeo eep eer eex ega ege egg egh ego egp egr egx eha ehe ehg ehh eho ehp ehr eo- eoa eoe eog eoh eoo eop eor ep- epa epe epg eph epo epp epr epx era ere erg erh ero erp err ex- exa exe exh exo exp exr exx g-p gaa gae gag gah gao gap gar ge- gea gee geg geh geo gep ger gex gga ggg ggh ggo ggp ggr gha ghe ghg ghh gho ghp ghr goa goe gog goh goo gop gor gox gpa gpe gpg gph gpo gpp gpr gpx gra gre grg grh gro grp grr grx gxa gxp haa hae hag hah hao hap har hax he- hea hee heg heh heo hep her hex hga hge hgg hgh hgo hgp hgr hha hhe hhg hhh hho hhp hhr hoa hoe hog hoh hoo hop hor hox hpa hpe hpg hph hpo hpp hpr hr- hra hre hrg hrh hro hrp hrr oaa oae oag oah oao oap oar oax oea oee oeg oeh oeo oep oer oex oga oge ogg ogh ogo ogp ogx oha ohe ohg ohh oho ohp ohr oo- ooa oog ooh ooo oop oor oox op- opa ope opg oph opo opp opr opx or- ora ore org orh oro orp orr orx ox- oxa oxo oxx p-p paa pae pag pah pao pap par pax pea pee peg peh peo pep per pex pga pge pgg pgh pgo pgp pgr pha phe phg pho php phr phx poa poe pog poh poo pop por pox ppa ppe ppg pph ppo ppp ppr ppx pra pre prg prh pro prp prr prx pxe pxg pxr ra- raa rae rag rah rao rap rar rax re- rea ree reg reh reo rep rer rex rga rge rgg rgh rgo rgp rgr rgx rh- rha rhe rhg rhh rho rhp rhr roa roe rog roh roo rop ror rox rpa rpe rpg rph rpo rpp rpr rpx rra rrg rrh rrp rrr rxp rxr xaa xag xap xar xee xeg xep xer xex xge xgp xhp xoa xog xoo xop xor xox xpa xpe xpg xpo xpp xrx xxo xxp xxx