-er a-a a-t aaa aae aam aap aar aas aat aax aea aee aem aep aer aes aet aex ama ame amm amp amr ams amt amx ap- apa ape apm app apr aps apt apx ar- ara are arm arp arr ars art arx as- asa ase asm asp asr ass ast asx at- ata ate atm atp atr ats att atx ax- axa axe axm axp axr axs axt axx eaa eae eam eap ear eas eat eax eea eee eem eep eer ees eet eex em- ema eme emm emp emr ems emt emx ep- epa epe epm epp epr eps ept epx era ere erm erp err ers ert es- esa ese esm esp esr ess est esx eta ete etm etp etr ets ett etx ex- exa exe exp exr exs ext exx m-r maa mae mam map mar mas mat max mea mee mem mep mer mes met mex mma mme mmm mmp mmr mms mmt mmx mpa mpe mpm mpp mpr mps mpt mpx mra mre mrm mrp mrr mrs mrt mrx msa mse msm msp msr mss mst msx mta mte mtm mtp mtr mts mtt mtx mxa mxp mxr mxs p-p paa pae pam pap par pas pat pax pea pee pem pep per pes pet pex pma pme pmm pmp pmr pms pmt pmx ppa ppe ppm ppp ppr pps ppt ppx pra pre prm prp prr prs prt prx ps- psa pse psm psp psr pss pst psx pt- pta pte ptm ptp ptr pts ptt ptx pxe pxm pxr pxs pxt ra- raa rae ram rap rar ras rat rax re- rea ree rem rep rer res ret rex rma rme rmm rmp rmr rms rmt rmx rpa rpe rpm rpp rpr rps rpt rpx rra rrm rrp rrr rrs rrt rsa rse rsm rsp rsr rss rst rsx rta rte rtm rtp rtr rts rtt rtx rxp rxr rxs saa sae sam sap sar sas sat sax se- sea see sem sep ser ses set sex sma sme smm smp smr sms smt smx spa spe spm spp spr sps spt spx sr- sra sre srm srp srr srs srt srx ss- ssa sse ssm ssp ssr sss sst ssx sta ste stm stp str sts stt stx sxm sxs sxt t-x taa tae tam tap tar tas tat tax te- tea tee tem tep ter tes tet tex tma tme tmm tmp tmr tms tmt tmx tpa tpe tpm tpp tpr tps tpt tpx tra tre trm trp trr trs trt trx tsa tse tsm tsp tsr tss tst tsx tta tte ttm ttp ttr tts ttt ttx txe txs txt xaa xam xap xar xas xat xee xem xep xer xes xet xex xma xmm xmp xmr xms xmt xmx xpa xpe xpm xpp xps xpt xrt xrx xsa xsm xsp xss xst xtm xtp xtr xts xtx xxp xxx