-er a-a a-b a-t aaa aab aad aae aag aao aar aas aat aau ab- aba abb abd abe abg abo abr abs abt abu ad- ada adb add ade adg ado adr ads adt adu aea aeb aed aee aeg aeo aer aes aet aeu ag- aga agb agd age agg ago agr ags agt agu aoa aob aod aoe aog aoo aor aos aot aou ar- ara arb ard are arg aro arr ars art aru as- asa asb asd ase asg aso asr ass ast asu at- ata atb atd ate atg ato atr ats att atu au- aua aub aud aue aug auo aur aus aut b-u baa bab bad bae bag bao bar bas bat bau bba bbb bbd bbe bbg bbo bbr bbs bbt bbu bda bdb bdd bde bdg bdo bdr bds bdt bdu be- bea beb bed bee beg beo ber bes bet beu bga bgb bgd bge bgg bgo bgr bgs bgt bgu boa bob bod boe bog boo bor bos bot bou bra brb brd bre brg bro brr brs brt bru bsa bsb bsd bse bsg bso bsr bss bst bsu bta btb btd bte btg bto btr bts btt btu bua bub bud bue bug buo bur bus but buu daa dab dad dae dag dao dar das dat dau dba dbb dbd dbe dbg dbo dbr dbs dbt dbu dda ddb ddd dde ddg ddo ddr dds ddt ddu de- dea deb ded dee deg deo der des det deu dga dgd dge dgg dgr dgs dgt dgu doa dob dod doe dog doo dor dos dot dou dra drb drd dre drg dro drr drs drt dru dsa dsb dsd dse dsg dso dsr dss dst dsu dta dtb dtd dte dtg dto dtr dts dtt dtu dua dub dud due dug duo dur dus dut eaa eab ead eae eag eao ear eas eat eau eba ebb ebd ebe ebg ebo ebr ebs ebt ebu ed- eda edb edd ede edg edo edr eds edt edu eea eeb eed eee eeg eeo eer ees eet ega egb egd ege egg ego egr egs egt egu eo- eoa eob eod eoe eog eoo eor eos eot eou era erb erd ere erg ero err ers ert eru es- esa esb esd ese esg eso esr ess est esu eta etb etd ete etg eto etr ets ett etu eu- eua eub eud eue eug eur eus eut g-d gaa gab gad gae gag gao gar gas gat gau gba gbd gbe gbg gbo gbr gbs gbt gbu gda gdb gdd gde gdo gdr gds gdt gdu ge- gea geb ged gee geg geo ger ges get geu gga ggb ggd ggg ggo ggr ggs ggt ggu goa gob god goe gog goo gor gos got gou gra grb grd gre grg gro grr grs grt gru gsa gsb gsd gse gsg gso gsr gss gst gsu gta gtb gtd gte gtg gto gtr gts gtt gtu gu- gua gub gud gue gug guo gur gus gut guu oaa oab oad oae oag oao oar oas oat oau ob- oba obb obd obe obg obo obr obs obt obu oda odb odd ode odg odo odr ods odt odu oea oeb oed oee oeg oeo oer oes oet oga ogd oge ogg ogo ogs ogt oo- ooa oob ood oog ooo oor oos oot or- ora orb ord ore org oro orr ors ort oru os- osa osb osd ose osg oso osr oss ost osu ot- ota otb otd ote otg oto otr ots ott otu ou- oua oud oue ouo our ous out ra- raa rab rad rae rag rao rar ras rat rau rba rbb rbd rbe rbg rbo rbr rbs rbt rbu rda rdb rdd rde rdg rdo rdr rds rdt rdu re- rea reb red ree reg reo rer res ret reu rga rgb rgd rge rgg rgo rgr rgs rgt roa rob rod roe rog roo ror ros rot rou rra rrb rrd rrg rrr rrs rrt rru rsa rsb rsd rse rsg rso rsr rss rst rsu rta rtb rtd rte rtg rto rtr rts rtt rtu rua rub rud rue rug ruo rur rus rut ruu saa sab sad sae sag sao sar sas sat sau sba sbb sbd sbe sbg sbo sbr sbs sbt sbu sda sdb sdd sde sdg sdo sdr sds sdt sdu se- sea seb sed see seg seo ser ses set seu sga sgb sgd sge sgg sgo sgr sgs sgt sgu soa sob sod soe sog soo sor sos sot sou sr- sra srb srd sre srg sro srr srs srt ss- ssa ssb ssd sse ssg sso ssr sss sst ssu sta stb std ste stg sto str sts stt stu sua sub sud sue sug suo sur sus sut suu taa tab tad tae tag tao tar tas tat tau tba tbb tbd tbe tbg tbo tbr tbs tbt tbu tda tdb tdd tde tdg tdo tdr tds tdt tdu te- tea teb ted tee teg teo ter tes tet teu tga tgb tge tgg tgo tgr tgs tgt tgu to- toa tob tod toe tog too tor tos tot tou tra trb trd tre trg tro trr trs trt tru tsa tsb tsd tse tsg tso tsr tss tst tsu tta ttb ttd tte ttg tto ttr tts ttt ttu tua tub tud tue tug tuo tur tus tut tuu ua- uaa uab uad uae uag uao uar uas uat uau uba ubb ube ubg ubo ubr ubs ubt ubu uda udb udd ude udg udo udr uds udt udu uea ueb ued uee ueg uer ues uet uga ugb uge ugg ugo ugr ugs ugt ugu uoa uob uod uoe uog uoo uor uos uot ur- ura urb urd ure urg uro urr urs urt uru usa usb usd use usg uso usr uss ust usu uta utb utd ute uto utr uts utt utu uua uue uug uur