bbbb bbeb bbet bebb bebe bebi beeb beef beet befe beff beft beit bete beti bett bftt bibb bibe bibi bieb bief biet biff bifi bite bitt btie bttb ebit eeee eefe eete efet effi efit eft- eiei eitb eiti etee etfb etfe ette etti feeb feet fefe feff fefi feie feit fete feti fett ffee ffff ffii fftf fibe fief fife fiff fifi fift fiii fite fiti fitt ftii i-be ibet ibfi ibie ibtb ieet ieie ietf iett ifbb ifit iiie iiii iiit iitt itbe itet itie itif ittf tbit teef teet teff tefi teft teie tete teti tett tfeb tibi tie- tiee tief tiei tiet tiff tift tiit tite titi titt ttbb ttff tttt