a-a a-b a-c aaa aab aac aad aae aag aah aao aas aau ab- aba abb abc abd abe abg abh abo abs abu ac- aca acb acc acd ace acg ach aco acs acu ad- ada adb adc add ade adg adh ado ads adu aea aeb aec aed aee aeg aeh aeo aes aeu ag- aga agb agc agd age agg agh ago ags agu aha ahb ahc ahd ahe ahg ahh aho ahs ahu aoa aob aoc aod aoe aog aoh aoo aos aou as- asa asb asc asd ase asg ash aso ass asu au- aua aub auc aud aue aug auh auo aus b-u baa bab bac bad bae bag bah bao bas bau bba bbb bbc bbd bbe bbg bbh bbo bbs bbu bca bcb bcc bcd bce bcg bch bco bcs bcu bda bdb bdc bdd bde bdg bdh bdo bds bdu be- bea beb bec bed bee beg beh beo bes beu bga bgb bgc bgd bge bgg bgh bgo bgs bgu bha bhb bhc bhd bhe bhg bhh bho bhs bhu boa bob boc bod boe bog boh boo bos bou bsa bsb bsc bsd bse bsg bsh bso bss bsu bua bub buc bud bue bug buh buo bus buu c-- caa cab cac cad cae cag cah cao cas cau cba cbb cbc cbd cbe cbg cbh cbo cbs cbu cca ccb ccc ccd cce ccg cch cco ccs ccu cda cdb cdc cdd cde cdg cdh cdo cds cdu ce- cea ceb cec ced cee ceg ceh ceo ces ceu cga cgb cgc cgd cge cgg cgh cgo cgs cgu ch- cha chb chc chd che chg chh cho chs chu co- coa cob coc cod coe cog coh coo cos cou csa csb csc csd cse csg csh cso css csu cua cub cuc cud cue cug cuh cuo cus cuu daa dab dac dad dae dag dah dao das dau dba dbb dbc dbd dbe dbg dbh dbo dbs dbu dca dcb dcc dcd dce dcg dco dcs dcu dda ddb ddc ddd dde ddg ddh ddo dds ddu de- dea deb dec ded dee deg deh deo des deu dga dgc dgd dge dgg dgh dgs dgu dh- dha dhb dhc dhd dhe dhh dho dhs dhu doa dob doc dod doe dog doh doo dos dou dsa dsb dsc dsd dse dsg dsh dso dss dsu dua dub duc dud due dug duh duo dus eaa eab eac ead eae eag eah eao eas eau eba ebb ebc ebd ebe ebg ebh ebo ebs ebu ec- eca ecb ecc ecd ece ecg ech eco ecs ecu ed- eda edb edc edd ede edg edh edo eds edu eea eeb eec eed eee eeg eeo ees ega egb egc egd ege egg egh ego egs egu eha ehb ehc ehd ehe ehg ehh eho ehs ehu eo- eoa eob eoc eod eoe eog eoh eoo eos eou es- esa esb esc esd ese esg esh eso ess esu eu- eua eub euc eud eue eug eus g-d gaa gab gac gad gae gag gah gao gas gau gba gbc gbd gbe gbg gbh gbo gbs gbu gca gcb gcc gcd gce gcg gch gco gcs gcu gda gdb gdc gdd gde gdh gdo gds gdu ge- gea geb gec ged gee geg geh geo ges geu gga ggb ggc ggd ggg ggh ggo ggs ggu gha ghb ghc ghd ghe ghg ghh gho ghs goa gob goc god goe gog goh goo gos gou gsa gsb gsc gsd gse gsg gso gss gsu gu- gua gub guc gud gue gug guo gus guu haa hab hac had hae hag hah hao has hau hba hbb hbc hbd hbe hbg hbh hbo hbs hbu hca hcb hcc hcd hce hcg hch hco hcs hda hdb hdc hdd hde hdg hdh hdo hds hdu he- hea heb hec hed hee heg heh heo hes heu hga hgb hgc hge hgg hgh hgo hgs hgu hha hhb hhc hhd hhe hhg hhh hho hhs hhu hoa hob hoc hod hoe hog hoh hoo hos hou hsa hsb hsc hsd hse hsg hsh hss hsu hua hub huc hud hue hug huh huo hus huu oaa oab oac oad oae oag oah oao oas oau ob- oba obb obc obd obe obg obh obo obs obu oc- oca ocb occ ocd ocg och oco ocs ocu oda odb odc odd ode odg odh odo ods odu oea oeb oec oed oee oeg oeh oeo oes oga ogc ogd oge ogg ogh ogo ogs oha ohc ohd ohe ohg ohh oho ohs ohu oo- ooa oob ooc ood oog ooh ooo oos os- osa osb osc osd ose osg osh oso oss osu ou- oua ouc oud oue ouh ouo ous saa sab sac sad sae sag sah sao sas sau sba sbb sbc sbd sbe sbg sbh sbo sbs sbu sca scb scc scd sce scg sch sco scs scu sda sdb sdc sdd sde sdg sdh sdo sds sdu se- sea seb sec sed see seg seh seo ses seu sga sgb sgc sgd sge sgg sgh sgo sgs sgu sh- sha shb shc shd she shg shh sho shs shu soa sob soc sod soe sog soh soo sos sou ss- ssa ssb ssc ssd sse ssg ssh sso sss ssu sua sub suc sud sue sug suh suo sus suu ua- uaa uab uac uad uae uag uah uao uas uau uba ubb ubc ube ubg ubh ubo ubs ubu uca ucb ucc ucd uce ucg uch uco ucs ucu uda udb udc udd ude udg udo uds udu uea ueb uec ued uee ueg ueh ues uga ugb ugc uge ugg ugh ugo ugs ugu uha uhb uhc uhd uhe uhh uho uhs uhu uoa uob uoc uod uoe uog uoo uos usa usb usc usd use usg ush uso uss usu uua uuc uue uug uus uuu