-ey b-u bbb bbe bbo bbt bbu bby be- beb bee beo bet beu bey bob boe boo bot bou boy btb bte bto btt btu bty bub bue buo but buu buy by- bye byo byt byu ebb ebe ebo ebt ebu eby eeb eee eeo eet eey eo- eob eoe eoo eot eou etb ete eto ett etu ety eu- eub eue eut eye eyo eyt ob- obb obe obo obt obu oby oeb oee oeo oet oey oo- oob ooo oot ot- otb ote oto ott otu ou- oue ouo out oye oyo tbb tbe tbo tbt tbu te- teb tee teo tet teu tey to- tob toe too tot tou toy ttb tte tto ttt ttu tty tub tue tuo tut tuu tuy tye tyo tyt ubb ube ubo ubt ubu uby ueb uee uet uey uob uoe uoo uot utb ute uto utt utu uty uue uut uuu uyo uyu ybe yby yeb yee yeo yet yey yob yoe yoo yot you yoy yte yto ytt ytu yue yuo yut yuu yuy yyb yye yyt yyu yyy