-ey bbb bbe bbg bbk bbo bby be- beb bee beg bek beo bey bgb bge bgg bgk bgo bkb bke bkg bkk bko bob boe bog bok boo boy by- bye byg byk byo ebb ebe ebg ebk ebo eby eeb eee eeg eek eeo eey egb ege egg ego egy ekb eke ekg eko eky eo- eob eoe eog eok eoo eye eyo gbe gbg gbk gbo gby ge- geb gee geg gek geo gey ggb ggg ggo gkb gko gob goe gog gok goo goy gy- gyb gye gyo kbb kbe kbk kbo ke- keb kee keg kek keo key kgb kgo kgy kkb kke kkk kky kob koe kog kok koo koy kye kyo ob- obb obe obg obk obo oby oeb oee oeg oeo oey oge ogg ogo ogy okb oke okg okk oko oo- oob oog ook ooo oye oyo ybe ybg yby yeb yee yeg yek yeo yey ygo ykk yob yoe yog yok yoo yoy yyb yye yyg yyy