buffi ubffi bfufi fbufi ufbfi fubfi buffi ubffi bfufi fbufi ufbfi fubfi bffui fbfui bffui fbfui ffbui ffbui uffbi fufbi uffbi fufbi ffubi ffubi bufif ubfif bfuif fbuif ufbif fubif buiff ubiff biuff ibuff uibff iubff bfiuf fbiuf bifuf ibfuf fibuf ifbuf ufibf fuibf uifbf iufbf fiubf ifubf bufif ubfif bfuif fbuif ufbif fubif buiff ubiff biuff ibuff uibff iubff bfiuf fbiuf bifuf ibfuf fibuf ifbuf ufibf fuibf uifbf iufbf fiubf ifubf bffiu fbfiu bffiu fbfiu ffbiu ffbiu bfifu fbifu biffu ibffu fibfu ifbfu bfifu fbifu biffu ibffu fibfu ifbfu ffibu ffibu fifbu iffbu fifbu iffbu uffib fufib uffib fufib ffuib ffuib ufifb fuifb uiffb iuffb fiufb ifufb ufifb fuifb uiffb iuffb fiufb ifufb ffiub ffiub fifub iffub fifub iffub
Note: these 'words' (valid or invalid) are all the permutations of the word buffi. These words are obtained by scrambling the letters in buffi.