-er a-a a-b a-i a-t aaa aab aad aae aai aam aar aat aax ab- aba abb abd abe abi abm abr abt abx ad- ada adb add ade adi adm adr adt adx aea aeb aed aee aei aem aer aet aex ai- aia aib aid aie aii aim air ait aix ama amb amd ame ami amm amr amt amx ar- ara arb ard are ari arm arr art arx at- ata atb atd ate ati atm atr att atx ax- axa axe axi axm axr axt axx baa bab bad bae bai bam bar bat bax bba bbb bbd bbe bbi bbm bbr bbt bbx bda bdb bdd bde bdi bdm bdr bdt bdx be- bea beb bed bee bei bem ber bet bex bi- bia bib bid bie bii bim bir bit bix bma bmb bmd bme bmi bmm bmr bmt bmx bra brb brd bre bri brm brr brt brx bta btb btd bte bti btm btr btt btx bxb bxd bxi bxm bxx daa dab dad dae dai dam dar dat dax dba dbb dbd dbe dbi dbm dbr dbt dbx dda ddb ddd dde ddi ddm ddr ddt ddx de- dea deb ded dee dei dem der det dex di- dia dib did die dii dim dir dit dix dma dmb dmd dme dmi dmm dmr dmt dmx dra drb drd dre dri drm drr drt drx dta dtb dtd dte dti dtm dtr dtt dtx dxd dxi dxr dxt dxx eaa eab ead eae eai eam ear eat eax eba ebb ebd ebe ebi ebm ebr ebt ebx ed- eda edb edd ede edi edm edr edt edx eea eeb eed eee eem eer eet eex eia eib eid eie eii eim eir eit eix em- ema emb emd eme emi emm emr emt emx era erb erd ere eri erm err ert eta etb etd ete eti etm etr ett etx ex- exa exd exe exi exr ext exx i-d ia- iaa iab iad iae iai iam iar iat iba ibb ibd ibe ibi ibm ibr ibt ibx ida idb idd ide idi idm idr idt idx ie- iea ied iee iei iem ier iet iex iia iib iid iie iii iim iir iit iix im- ima imb imd ime imi imm imt imx ir- ira irb ird ire iri irm irr irt irx ita itb itd ite iti itm itt itx ixe ixi m-r maa mab mad mae mai mam mar mat max mba mbb mbd mbe mbi mbm mbr mbt mbx mda mdb mdd mde mdi mdm mdr mdt mdx mea meb med mee mei mem mer met mex mi- mia mib mid mie mii mim mir mit mix mma mmb mmd mme mmi mmm mmr mmt mmx mra mrb mrd mre mri mrm mrr mrt mrx mta mtb mtd mte mti mtm mtr mtt mtx mxa mxd mxi mxr ra- raa rab rad rae rai ram rar rat rax rba rbb rbd rbe rbi rbm rbr rbt rbx rda rdb rdd rde rdi rdm rdr rdt rdx re- rea reb red ree rei rem rer ret rex ria rib rid rie rii rim rir rit rix rma rmb rmd rme rmi rmm rmr rmt rmx rra rrb rrd rri rrm rrr rrt rta rtb rtd rte rti rtm rtr rtt rtx rxr t-x taa tab tad tae tai tam tar tat tax tba tbb tbd tbe tbi tbm tbr tbt tda tdb tdd tde tdi tdm tdr tdt tdx te- tea teb ted tee tei tem ter tet tex tia tib tid tie tii tim tir tit tix tma tmb tmd tme tmi tmm tmr tmt tmx tra trb trd tre tri trm trr trt trx tta ttb ttd tte tti ttm ttr ttt ttx txe txi txt xaa xad xam xar xat xbe xbr xbx xda xdb xde xdi xdm xdr xdt xed xee xem xer xet xex xia xie xii xit xix xma xmd xmi xmm xmr xmt xmx xrd xrt xrx xti xtm xtr xtx xxi xxx