-er a-a aaa aae aag aap aar aas aax aea aee aeg aep aer aes aex ag- aga age agg agp agr ags agx ap- apa ape apg app apr aps apx ar- ara are arg arp arr ars arx as- asa ase asg asp asr ass asx ax- axa axe axp axr axs axx eaa eae eag eap ear eas eax eea eee eeg eep eer ees eex ega ege egg egp egr egs egx ep- epa epe epg epp epr eps epx era ere erg erp err ers es- esa ese esg esp esr ess esx ex- exa exe exp exr exs exx g-p gaa gae gag gap gar gas ge- gea gee geg gep ger ges gex gga ggg ggp ggr ggs gpa gpe gpg gpp gpr gps gpx gra gre grg grp grr grs grx gsa gse gsg gsp gsr gss gsx gxa gxp gxs p-p paa pae pag pap par pas pax pea pee peg pep per pes pex pga pge pgg pgp pgr pgs ppa ppe ppg ppp ppr pps ppx pra pre prg prp prr prs prx ps- psa pse psg psp psr pss psx pxe pxg pxr pxs ra- raa rae rag rap rar ras rax re- rea ree reg rep rer res rex rga rge rgg rgp rgr rgs rgx rpa rpe rpg rpp rpr rps rpx rra rrg rrp rrr rrs rsa rse rsg rsp rsr rss rsx rxp rxr rxs saa sae sag sap sar sas sax se- sea see seg sep ser ses sex sga sge sgg sgp sgr sgs sgx spa spe spg spp spr sps spx sr- sra sre srg srp srr srs srx ss- ssa sse ssg ssp ssr sss ssx sxs xaa xag xap xar xas xee xeg xep xer xes xex xge xgp xpa xpe xpg xpp xps xrx xsa xsp xss xxp xxx