a-a a-b a-t aaa aab aad aae aao aas aat aau ab- aba abb abd abe abo abs abt abu ad- ada adb add ade ado ads adt adu aea aeb aed aee aeo aes aet aeu aoa aob aod aoe aoo aos aot aou as- asa asb asd ase aso ass ast asu at- ata atb atd ate ato ats att atu au- aua aub aud aue auo aus aut b-u baa bab bad bae bao bas bat bau bba bbb bbd bbe bbo bbs bbt bbu bda bdb bdd bde bdo bds bdt bdu be- bea beb bed bee beo bes bet beu boa bob bod boe boo bos bot bou bsa bsb bsd bse bso bss bst bsu bta btb btd bte bto bts btt btu bua bub bud bue buo bus but buu daa dab dad dae dao das dat dau dba dbb dbd dbe dbo dbs dbt dbu dda ddb ddd dde ddo dds ddt ddu de- dea deb ded dee deo des det deu doa dob dod doe doo dos dot dou dsa dsb dsd dse dso dss dst dsu dta dtb dtd dte dto dts dtt dtu dua dub dud due duo dus dut eaa eab ead eae eao eas eat eau eba ebb ebd ebe ebo ebs ebt ebu ed- eda edb edd ede edo eds edt edu eea eeb eed eee eeo ees eet eo- eoa eob eod eoe eoo eos eot eou es- esa esb esd ese eso ess est esu eta etb etd ete eto ets ett etu eu- eua eub eud eue eus eut oaa oab oad oae oao oas oat oau ob- oba obb obd obe obo obs obt obu oda odb odd ode odo ods odt odu oea oeb oed oee oeo oes oet oo- ooa oob ood ooo oos oot os- osa osb osd ose oso oss ost osu ot- ota otb otd ote oto ots ott otu ou- oua oud oue ouo ous out saa sab sad sae sao sas sat sau sba sbb sbd sbe sbo sbs sbt sbu sda sdb sdd sde sdo sds sdt sdu se- sea seb sed see seo ses set seu soa sob sod soe soo sos sot sou ss- ssa ssb ssd sse sso sss sst ssu sta stb std ste sto sts stt stu sua sub sud sue suo sus sut suu taa tab tad tae tao tas tat tau tba tbb tbd tbe tbo tbs tbt tbu tda tdb tdd tde tdo tds tdt tdu te- tea teb ted tee teo tes tet teu to- toa tob tod toe too tos tot tou tsa tsb tsd tse tso tss tst tsu tta ttb ttd tte tto tts ttt ttu tua tub tud tue tuo tus tut tuu ua- uaa uab uad uae uao uas uat uau uba ubb ube ubo ubs ubt ubu uda udb udd ude udo uds udt udu uea ueb ued uee ues uet uoa uob uod uoe uoo uos uot usa usb usd use uso uss ust usu uta utb utd ute uto uts utt utu uua uue uus uut uuu