-er a-a a-t aaa aae aam aap aar aat aax aea aee aem aep aer aet aex ama ame amm amp amr amt amx ap- apa ape apm app apr apt apx ar- ara are arm arp arr art arx at- ata ate atm atp atr att atx ax- axa axe axm axp axr axt axx eaa eae eam eap ear eat eax eea eee eem eep eer eet eex em- ema eme emm emp emr emt emx ep- epa epe epm epp epr ept epx era ere erm erp err ert eta ete etm etp etr ett etx ex- exa exe exp exr ext exx m-r maa mae mam map mar mat max mea mee mem mep mer met mex mma mme mmm mmp mmr mmt mmx mpa mpe mpm mpp mpr mpt mpx mra mre mrm mrp mrr mrt mrx mta mte mtm mtp mtr mtt mtx mxa mxp mxr p-p paa pae pam pap par pat pax pea pee pem pep per pet pex pma pme pmm pmp pmr pmt pmx ppa ppe ppm ppp ppr ppt ppx pra pre prm prp prr prt prx pt- pta pte ptm ptp ptr ptt ptx pxe pxm pxr pxt ra- raa rae ram rap rar rat rax re- rea ree rem rep rer ret rex rma rme rmm rmp rmr rmt rmx rpa rpe rpm rpp rpr rpt rpx rra rrm rrp rrr rrt rta rte rtm rtp rtr rtt rtx rxp rxr t-x taa tae tam tap tar tat tax te- tea tee tem tep ter tet tex tma tme tmm tmp tmr tmt tmx tpa tpe tpm tpp tpr tpt tpx tra tre trm trp trr trt trx tta tte ttm ttp ttr ttt ttx txe txt xaa xam xap xar xat xee xem xep xer xet xex xma xmm xmp xmr xmt xmx xpa xpe xpm xpp xpt xrt xrx xtm xtp xtr xtx xxp xxx