-er a-a a-b a-i a-t aaa aab aae aai aam aar aat aau aax ab- aba abb abe abi abm abr abt abu abx aea aeb aee aei aem aer aet aeu aex ai- aia aib aie aii aim air ait aiu aix ama amb ame ami amm amr amt amu amx ar- ara arb are ari arm arr art aru arx at- ata atb ate ati atm atr att atu atx au- aua aub aue aui aum aur aut aux ax- axa axe axi axm axr axt axx b-u baa bab bae bai bam bar bat bau bax bba bbb bbe bbi bbm bbr bbt bbu bbx be- bea beb bee bei bem ber bet beu bex bi- bia bib bie bii bim bir bit biu bix bma bmb bme bmi bmm bmr bmt bmu bmx bra brb bre bri brm brr brt bru brx bta btb bte bti btm btr btt btu btx bua bub bue bui bum bur but buu bux bxb bxi bxm bxx eaa eab eae eai eam ear eat eau eax eba ebb ebe ebi ebm ebr ebt ebu ebx eea eeb eee eem eer eet eex eia eib eie eii eim eir eit eiu eix em- ema emb eme emi emm emr emt emu emx era erb ere eri erm err ert eru eta etb ete eti etm etr ett etu etx eu- eua eub eue eui eur eut eux ex- exa exe exi exr ext exu exx ia- iaa iab iae iai iam iar iat iau iba ibb ibe ibi ibm ibr ibt ibu ibx ie- iea iee iei iem ier iet iex iia iib iie iii iim iir iit iiu iix im- ima imb ime imi imm imt imu imx ir- ira irb ire iri irm irr irt iru irx ita itb ite iti itm itt itu itx iu- iua iub iue iui ium iur iut ixe ixi m-r maa mab mae mai mam mar mat mau max mba mbb mbe mbi mbm mbr mbt mbu mbx mea meb mee mei mem mer met meu mex mi- mia mib mie mii mim mir mit miu mix mma mmb mme mmi mmm mmr mmt mmu mmx mra mrb mre mri mrm mrr mrt mru mrx mta mtb mte mti mtm mtr mtt mtu mtx mua mub mue mui mum mur mut muu mux mxa mxi mxr mxu ra- raa rab rae rai ram rar rat rau rax rba rbb rbe rbi rbm rbr rbt rbu rbx re- rea reb ree rei rem rer ret reu rex ria rib rie rii rim rir rit rix rma rmb rme rmi rmm rmr rmt rmx rra rrb rri rrm rrr rrt rru rta rtb rte rti rtm rtr rtt rtu rtx rua rub rue rui rum rur rut ruu rux rxr t-x taa tab tae tai tam tar tat tau tax tba tbb tbe tbi tbm tbr tbt tbu te- tea teb tee tei tem ter tet teu tex tia tib tie tii tim tir tit tiu tix tma tmb tme tmi tmm tmr tmt tmu tmx tra trb tre tri trm trr trt tru trx tta ttb tte tti ttm ttr ttt ttu ttx tua tub tue tui tum tur tut tuu tux txe txi txt txu ua- uaa uab uae uai uam uar uat uau uba ubb ube ubi ubr ubt ubu ubx uea ueb uee uei uem uer uet uia uib uie uii uim uir uit uiu um- uma umb ume umi umm umr umt umu ur- ura urb ure uri urm urr urt uru urx uta utb ute uti utm utr utt utu utx uua uue uum uur uut uuu uxb uxr uxt uxu xaa xam xar xat xau xbe xbr xbx xee xem xer xet xeu xex xia xie xii xit xiu xix xma xmi xmm xmr xmt xmu xmx xrt xrx xti xtm xtr xtx xue xui xxi xxx