-ey b-u bbb bbc bbd bbe bbo bbt bbu bby bcb bcc bcd bce bco bct bcu bcy bdb bdc bdd bde bdo bdt bdu bdy be- beb bec bed bee beo bet beu bey bob boc bod boe boo bot bou boy btb btc btd bte bto btt btu bty bub buc bud bue buo but buu buy by- byc byd bye byo byt byu c-- cbb cbc cbd cbe cbo cbt cbu cby ccb ccc ccd cce cco cct ccu cdb cdc cdd cde cdo cdt cdu cdy ce- ceb cec ced cee ceo cet ceu cey co- cob coc cod coe coo cot cou coy ctb ctc ctd cte cto ctt ctu cty cub cuc cud cue cuo cut cuu cuy cyb cyc cyd cye cyo cyt dbb dbc dbd dbe dbo dbt dbu dby dcb dcc dcd dce dco dct dcu ddb ddc ddd dde ddo ddt ddu ddy de- deb dec ded dee deo det deu dey dob doc dod doe doo dot dou doy dtb dtc dtd dte dto dtt dtu dty dub duc dud due duo dut duy dy- dyb dyc dyd dye dyo dyu dyy ebb ebc ebd ebe ebo ebt ebu eby ec- ecb ecc ecd ece eco ect ecu ed- edb edc edd ede edo edt edu edy eeb eec eed eee eeo eet eey eo- eob eoc eod eoe eoo eot eou etb etc etd ete eto ett etu ety eu- eub euc eud eue eut eyc eyd eye eyo eyt ob- obb obc obd obe obo obt obu oby oc- ocb occ ocd oco oct ocu odb odc odd ode odo odt odu oeb oec oed oee oeo oet oey oo- oob ooc ood ooo oot ot- otb otc otd ote oto ott otu ou- ouc oud oue ouo out oyd oye oyo tbb tbc tbd tbe tbo tbt tbu tcb tcc tcd tce tco tct tcu tdb tdc tdd tde tdo tdt tdu tdy te- teb tec ted tee teo tet teu tey to- tob toc tod toe too tot tou toy ttb ttc ttd tte tto ttt ttu tty tub tuc tud tue tuo tut tuu tuy tyc tyd tye tyo tyt ubb ubc ube ubo ubt ubu uby ucb ucc ucd uce uco uct ucu udb udc udd ude udo udt udu ueb uec ued uee uet uey uob uoc uod uoe uoo uot utb utc utd ute uto utt utu uty uuc uue uut uuu uyc uyo uyu ybc ybe yby ycc ycd yce yco ycu ycy yde ydo ydt ydy yeb yec yed yee yeo yet yey yob yoc yod yoe yoo yot you yoy ytc ytd yte yto ytt ytu yud yue yuo yut yuu yuy yyb yyc yye yyt yyu yyy