-ey b-u bbb bbe bbi bbt bbu bby be- beb bee bei bet beu bey bi- bib bie bii bit biu biy btb bte bti btt btu bty bub bue bui but buu buy by- bye byi byt byu ebb ebe ebi ebt ebu eby eeb eee eet eey eib eie eii eit eiu etb ete eti ett etu ety eu- eub eue eui eut eye eyt ibb ibe ibi ibt ibu iby ie- iee iei iet iey iib iie iii iit iiu itb ite iti itt itu ity iu- iub iue iui iut iye iyt iyy tbb tbe tbi tbt tbu te- teb tee tei tet teu tey tib tie tii tit tiu tiy ttb tte tti ttt ttu tty tub tue tui tut tuu tuy tye tyt ubb ube ubi ubt ubu uby ueb uee uei uet uey uib uie uii uit uiu utb ute uti utt utu uty uue uut uuu uyi uyu ybe ybi yby yeb yee yei yet yey yie yii yit yte ytt ytu yue yui yut yuu yuy yyb yye yyt yyu yyy