a-a a-b a-t aaa aab aad aae aag aao aat aau ab- aba abb abd abe abg abo abt abu ad- ada adb add ade adg ado adt adu aea aeb aed aee aeg aeo aet aeu ag- aga agb agd age agg ago agt agu aoa aob aod aoe aog aoo aot aou at- ata atb atd ate atg ato att atu au- aua aub aud aue aug auo aut b-u baa bab bad bae bag bao bat bau bba bbb bbd bbe bbg bbo bbt bbu bda bdb bdd bde bdg bdo bdt bdu be- bea beb bed bee beg beo bet beu bga bgb bgd bge bgg bgo bgt bgu boa bob bod boe bog boo bot bou bta btb btd bte btg bto btt btu bua bub bud bue bug buo but buu daa dab dad dae dag dao dat dau dba dbb dbd dbe dbg dbo dbt dbu dda ddb ddd dde ddg ddo ddt ddu de- dea deb ded dee deg deo det deu dga dgd dge dgg dgt dgu doa dob dod doe dog doo dot dou dta dtb dtd dte dtg dto dtt dtu dua dub dud due dug duo dut eaa eab ead eae eag eao eat eau eba ebb ebd ebe ebg ebo ebt ebu ed- eda edb edd ede edg edo edt edu eea eeb eed eee eeg eeo eet ega egb egd ege egg ego egt egu eo- eoa eob eod eoe eog eoo eot eou eta etb etd ete etg eto ett etu eu- eua eub eud eue eug eut g-d gaa gab gad gae gag gao gat gau gba gbd gbe gbg gbo gbt gbu gda gdb gdd gde gdo gdt gdu ge- gea geb ged gee geg geo get geu gga ggb ggd ggg ggo ggt ggu goa gob god goe gog goo got gou gta gtb gtd gte gtg gto gtt gtu gu- gua gub gud gue gug guo gut guu oaa oab oad oae oag oao oat oau ob- oba obb obd obe obg obo obt obu oda odb odd ode odg odo odt odu oea oeb oed oee oeg oeo oet oga ogd oge ogg ogo ogt oo- ooa oob ood oog ooo oot ot- ota otb otd ote otg oto ott otu ou- oua oud oue ouo out taa tab tad tae tag tao tat tau tba tbb tbd tbe tbg tbo tbt tbu tda tdb tdd tde tdg tdo tdt tdu te- tea teb ted tee teg teo tet teu tga tgb tge tgg tgo tgt tgu to- toa tob tod toe tog too tot tou tta ttb ttd tte ttg tto ttt ttu tua tub tud tue tug tuo tut tuu ua- uaa uab uad uae uag uao uat uau uba ubb ube ubg ubo ubt ubu uda udb udd ude udg udo udt udu uea ueb ued uee ueg uet uga ugb uge ugg ugo ugt ugu uoa uob uod uoe uog uoo uot uta utb utd ute uto utt utu uua uue uug uut uuu