-er a-a a-b a-i a-t aaa aab aae aai aam aar aas aat aau aax ab- aba abb abe abi abm abr abs abt abu abx aea aeb aee aei aem aer aes aet aeu aex ai- aia aib aie aii aim air ais ait aiu aix ama amb ame ami amm amr ams amt amu amx ar- ara arb are ari arm arr ars art aru arx as- asa asb ase asi asm asr ass ast asu asx at- ata atb ate ati atm atr ats att atu atx au- aua aub aue aui aum aur aus aut aux ax- axa axe axi axm axr axs axt axx b-u baa bab bae bai bam bar bas bat bau bax bba bbb bbe bbi bbm bbr bbs bbt bbu bbx be- bea beb bee bei bem ber bes bet beu bex bi- bia bib bie bii bim bir bis bit biu bix bma bmb bme bmi bmm bmr bms bmt bmu bmx bra brb bre bri brm brr brs brt bru brx bsa bsb bse bsi bsm bsr bss bst bsu bsx bta btb bte bti btm btr bts btt btu btx bua bub bue bui bum bur bus but buu bux bxb bxi bxm bxx eaa eab eae eai eam ear eas eat eau eax eba ebb ebe ebi ebm ebr ebs ebt ebu ebx eea eeb eee eem eer ees eet eex eia eib eie eii eim eir eis eit eiu eix em- ema emb eme emi emm emr ems emt emu emx era erb ere eri erm err ers ert eru es- esa esb ese esi esm esr ess est esu esx eta etb ete eti etm etr ets ett etu etx eu- eua eub eue eui eur eus eut eux ex- exa exe exi exr exs ext exu exx ia- iaa iab iae iai iam iar ias iat iau iba ibb ibe ibi ibm ibr ibs ibt ibu ibx ie- iea iee iei iem ier ies iet iex iia iib iie iii iim iir iis iit iiu iix im- ima imb ime imi imm ims imt imu imx ir- ira irb ire iri irm irr irs irt iru irx is- isa isb ise isi ism isr iss ist isu ita itb ite iti itm its itt itu itx iu- iua iub iue iui ium iur ius iut ixe ixi m-r maa mab mae mai mam mar mas mat mau max mba mbb mbe mbi mbm mbr mbs mbt mbu mbx mea meb mee mei mem mer mes met meu mex mi- mia mib mie mii mim mir mis mit miu mix mma mmb mme mmi mmm mmr mms mmt mmu mmx mra mrb mre mri mrm mrr mrs mrt mru mrx msa msb mse msi msm msr mss mst msu msx mta mtb mte mti mtm mtr mts mtt mtu mtx mua mub mue mui mum mur mus mut muu mux mxa mxi mxr mxs mxu ra- raa rab rae rai ram rar ras rat rau rax rba rbb rbe rbi rbm rbr rbs rbt rbu rbx re- rea reb ree rei rem rer res ret reu rex ria rib rie rii rim rir ris rit rix rma rmb rme rmi rmm rmr rms rmt rmx rra rrb rri rrm rrr rrs rrt rru rsa rsb rse rsi rsm rsr rss rst rsu rsx rta rtb rte rti rtm rtr rts rtt rtu rtx rua rub rue rui rum rur rus rut ruu rux rxr rxs saa sab sae sai sam sar sas sat sau sax sba sbb sbe sbi sbm sbr sbs sbt sbu sbx se- sea seb see sei sem ser ses set seu sex sia sib sie sii sim sir sis sit siu six sma smb sme smi smm smr sms smt smu smx sr- sra srb sre sri srm srr srs srt srx ss- ssa ssb sse ssi ssm ssr sss sst ssu ssx sta stb ste sti stm str sts stt stu stx sua sub sue sui sum sur sus sut suu sux sxi sxm sxs sxt sxu t-x taa tab tae tai tam tar tas tat tau tax tba tbb tbe tbi tbm tbr tbs tbt tbu te- tea teb tee tei tem ter tes tet teu tex tia tib tie tii tim tir tis tit tiu tix tma tmb tme tmi tmm tmr tms tmt tmu tmx tra trb tre tri trm trr trs trt tru trx tsa tsb tse tsi tsm tsr tss tst tsu tsx tta ttb tte tti ttm ttr tts ttt ttu ttx tua tub tue tui tum tur tus tut tuu tux txe txi txs txt txu ua- uaa uab uae uai uam uar uas uat uau uba ubb ube ubi ubr ubs ubt ubu ubx uea ueb uee uei uem uer ues uet uia uib uie uii uim uir uis uit uiu um- uma umb ume umi umm umr ums umt umu ur- ura urb ure uri urm urr urs urt uru urx usa usb use usi usm usr uss ust usu usx uta utb ute uti utm utr uts utt utu utx uua uue uum uur uus uut uuu uxb uxr uxt uxu xaa xam xar xas xat xau xbe xbr xbx xee xem xer xes xet xeu xex xia xie xii xis xit xiu xix xma xmi xmm xmr xms xmt xmu xmx xrt xrx xsa xsb xsi xsm xss xst xti xtm xtr xts xtx xue xui xus xxi xxx