a-a a-b a-c aaa aab aac aad aae aag aah aao aau ab- aba abb abc abd abe abg abh abo abu ac- aca acb acc acd ace acg ach aco acu ad- ada adb adc add ade adg adh ado adu aea aeb aec aed aee aeg aeh aeo aeu ag- aga agb agc agd age agg agh ago agu aha ahb ahc ahd ahe ahg ahh aho ahu aoa aob aoc aod aoe aog aoh aoo aou au- aua aub auc aud aue aug auh auo b-u baa bab bac bad bae bag bah bao bau bba bbb bbc bbd bbe bbg bbh bbo bbu bca bcb bcc bcd bce bcg bch bco bcu bda bdb bdc bdd bde bdg bdh bdo bdu be- bea beb bec bed bee beg beh beo beu bga bgb bgc bgd bge bgg bgh bgo bgu bha bhb bhc bhd bhe bhg bhh bho bhu boa bob boc bod boe bog boh boo bou bua bub buc bud bue bug buh buo buu c-- caa cab cac cad cae cag cah cao cau cba cbb cbc cbd cbe cbg cbh cbo cbu cca ccb ccc ccd cce ccg cch cco ccu cda cdb cdc cdd cde cdg cdh cdo cdu ce- cea ceb cec ced cee ceg ceh ceo ceu cga cgb cgc cgd cge cgg cgh cgo cgu ch- cha chb chc chd che chg chh cho chu co- coa cob coc cod coe cog coh coo cou cua cub cuc cud cue cug cuh cuo cuu daa dab dac dad dae dag dah dao dau dba dbb dbc dbd dbe dbg dbh dbo dbu dca dcb dcc dcd dce dcg dco dcu dda ddb ddc ddd dde ddg ddh ddo ddu de- dea deb dec ded dee deg deh deo deu dga dgc dgd dge dgg dgh dgu dh- dha dhb dhc dhd dhe dhh dho dhu doa dob doc dod doe dog doh doo dou dua dub duc dud due dug duh duo eaa eab eac ead eae eag eah eao eau eba ebb ebc ebd ebe ebg ebh ebo ebu ec- eca ecb ecc ecd ece ecg ech eco ecu ed- eda edb edc edd ede edg edh edo edu eea eeb eec eed eee eeg eeo ega egb egc egd ege egg egh ego egu eha ehb ehc ehd ehe ehg ehh eho ehu eo- eoa eob eoc eod eoe eog eoh eoo eou eu- eua eub euc eud eue eug g-d gaa gab gac gad gae gag gah gao gau gba gbc gbd gbe gbg gbh gbo gbu gca gcb gcc gcd gce gcg gch gco gcu gda gdb gdc gdd gde gdh gdo gdu ge- gea geb gec ged gee geg geh geo geu gga ggb ggc ggd ggg ggh ggo ggu gha ghb ghc ghd ghe ghg ghh gho goa gob goc god goe gog goh goo gou gu- gua gub guc gud gue gug guo guu haa hab hac had hae hag hah hao hau hba hbb hbc hbd hbe hbg hbh hbo hbu hca hcb hcc hcd hce hcg hch hco hda hdb hdc hdd hde hdg hdh hdo hdu he- hea heb hec hed hee heg heh heo heu hga hgb hgc hge hgg hgh hgo hgu hha hhb hhc hhd hhe hhg hhh hho hhu hoa hob hoc hod hoe hog hoh hoo hou hua hub huc hud hue hug huh huo huu oaa oab oac oad oae oag oah oao oau ob- oba obb obc obd obe obg obh obo obu oc- oca ocb occ ocd ocg och oco ocu oda odb odc odd ode odg odh odo odu oea oeb oec oed oee oeg oeh oeo oga ogc ogd oge ogg ogh ogo oha ohc ohd ohe ohg ohh oho ohu oo- ooa oob ooc ood oog ooh ooo ou- oua ouc oud oue ouh ouo ua- uaa uab uac uad uae uag uah uao uau uba ubb ubc ube ubg ubh ubo ubu uca ucb ucc ucd uce ucg uch uco ucu uda udb udc udd ude udg udo udu uea ueb uec ued uee ueg ueh uga ugb ugc uge ugg ugh ugo ugu uha uhb uhc uhd uhe uhh uho uhu uoa uob uoc uod uoe uog uoo uua uuc uue uug uuu