a-a a-b a-t aaa aab aad aae aam aas aat aau ab- aba abb abd abe abm abs abt abu ad- ada adb add ade adm ads adt adu aea aeb aed aee aem aes aet aeu ama amb amd ame amm ams amt amu as- asa asb asd ase asm ass ast asu at- ata atb atd ate atm ats att atu au- aua aub aud aue aum aus aut b-u baa bab bad bae bam bas bat bau bba bbb bbd bbe bbm bbs bbt bbu bda bdb bdd bde bdm bds bdt bdu be- bea beb bed bee bem bes bet beu bma bmb bmd bme bmm bms bmt bmu bsa bsb bsd bse bsm bss bst bsu bta btb btd bte btm bts btt btu bua bub bud bue bum bus but buu daa dab dad dae dam das dat dau dba dbb dbd dbe dbm dbs dbt dbu dda ddb ddd dde ddm dds ddt ddu de- dea deb ded dee dem des det deu dma dmb dmd dme dmm dms dmt dmu dsa dsb dsd dse dsm dss dst dsu dta dtb dtd dte dtm dts dtt dtu dua dub dud due dum dus dut eaa eab ead eae eam eas eat eau eba ebb ebd ebe ebm ebs ebt ebu ed- eda edb edd ede edm eds edt edu eea eeb eed eee eem ees eet em- ema emb emd eme emm ems emt emu es- esa esb esd ese esm ess est esu eta etb etd ete etm ets ett etu eu- eua eub eud eue eus eut maa mab mad mae mam mas mat mau mba mbb mbd mbe mbm mbs mbt mbu mda mdb mdd mde mdm mds mdt mdu mea meb med mee mem mes met meu mma mmb mmd mme mmm mms mmt mmu msa msb msd mse msm mss mst msu mta mtb mtd mte mtm mts mtt mtu mua mub mud mue mum mus mut muu saa sab sad sae sam sas sat sau sba sbb sbd sbe sbm sbs sbt sbu sda sdb sdd sde sdm sds sdt sdu se- sea seb sed see sem ses set seu sma smb smd sme smm sms smt smu ss- ssa ssb ssd sse ssm sss sst ssu sta stb std ste stm sts stt stu sua sub sud sue sum sus sut suu taa tab tad tae tam tas tat tau tba tbb tbd tbe tbm tbs tbt tbu tda tdb tdd tde tdm tds tdt tdu te- tea teb ted tee tem tes tet teu tma tmb tmd tme tmm tms tmt tmu tsa tsb tsd tse tsm tss tst tsu tta ttb ttd tte ttm tts ttt ttu tua tub tud tue tum tus tut tuu ua- uaa uab uad uae uam uas uat uau uba ubb ube ubs ubt ubu uda udb udd ude udm uds udt udu uea ueb ued uee uem ues uet um- uma umb umd ume umm ums umt umu usa usb usd use usm uss ust usu uta utb utd ute utm uts utt utu uua uue uum uus uut uuu