bbbb bbeb bbet bebb bebe bebo beeb beek beet beke beko beo- beok beot bete beto bett bobb bobe bobo boee boeo boet boke boko boob booe book boot botb bote boto bott btek btob bttb ebbo eboe eboo eeee eeke eete ekeb ekek eket eoto etee etoe etok ette etto kbbb kbbe kbbk kbbo kbbt kbeb kbee kbek kbeo kbet kbkb kbkk kbko kbob kboe kbok kboo kbot kbtb kbte kbtk kbto kbtt kebb kebe kebt keek keet kekb keke keko keok ket- kete ketk keto kett kkbb kkbe kkbo kkbt kkkk kkob kkoo kkot kktk kobb kobe kobk kobo kokb koke kokk koko koob kook kooo koot kotb kote kotk koto kott ktbb ktbt ktee ktek ktkb ktke ktkk ktko ktkt ktob ktoe ktok ktoo ktot kttk ktto kttt o-eo obbo obet obkb oboe obok obot oket okko okok okot okto oobe oooo ootb otee oto- otoe otok otoo otte otto tebo teek teet teke teok tete teto tett tobe tobo tobt toee toek toet toke toko took toot tote toto tott ttbb tteo ttoe tttt