-er a-a a-t aaa aae aag aap aar aas aat aax aea aee aeg aep aer aes aet aex ag- aga age agg agp agr ags agt agx ap- apa ape apg app apr aps apt apx ar- ara are arg arp arr ars art arx as- asa ase asg asp asr ass ast asx at- ata ate atg atp atr ats att atx ax- axa axe axp axr axs axt axx eaa eae eag eap ear eas eat eax eea eee eeg eep eer ees eet eex ega ege egg egp egr egs egt egx ep- epa epe epg epp epr eps ept epx era ere erg erp err ers ert es- esa ese esg esp esr ess est esx eta ete etg etp etr ets ett etx ex- exa exe exp exr exs ext exx g-p gaa gae gag gap gar gas gat ge- gea gee geg gep ger ges get gex gga ggg ggp ggr ggs ggt gpa gpe gpg gpp gpr gps gpt gpx gra gre grg grp grr grs grt grx gsa gse gsg gsp gsr gss gst gsx gta gte gtg gtp gtr gts gtt gtx gxa gxp gxs gxt p-p paa pae pag pap par pas pat pax pea pee peg pep per pes pet pex pga pge pgg pgp pgr pgs pgt ppa ppe ppg ppp ppr pps ppt ppx pra pre prg prp prr prs prt prx ps- psa pse psg psp psr pss pst psx pt- pta pte ptg ptp ptr pts ptt ptx pxe pxg pxr pxs pxt ra- raa rae rag rap rar ras rat rax re- rea ree reg rep rer res ret rex rga rge rgg rgp rgr rgs rgt rgx rpa rpe rpg rpp rpr rps rpt rpx rra rrg rrp rrr rrs rrt rsa rse rsg rsp rsr rss rst rsx rta rte rtg rtp rtr rts rtt rtx rxp rxr rxs saa sae sag sap sar sas sat sax se- sea see seg sep ser ses set sex sga sge sgg sgp sgr sgs sgt sgx spa spe spg spp spr sps spt spx sr- sra sre srg srp srr srs srt srx ss- ssa sse ssg ssp ssr sss sst ssx sta ste stg stp str sts stt stx sxs sxt t-x taa tae tag tap tar tas tat tax te- tea tee teg tep ter tes tet tex tga tge tgg tgp tgr tgs tgt tpa tpe tpg tpp tpr tps tpt tpx tra tre trg trp trr trs trt trx tsa tse tsg tsp tsr tss tst tsx tta tte ttg ttp ttr tts ttt ttx txe txs txt xaa xag xap xar xas xat xee xeg xep xer xes xet xex xge xgp xpa xpe xpg xpp xps xpt xrt xrx xsa xsp xss xst xtp xtr xts xtx xxp xxx