gonof ognof gnoof ngoof ongof nogof goonf ogonf goonf ogonf oognf oognf gnoof ngoof gonof ognof nogof ongof onogf noogf oongf oongf noogf onogf gonfo ognfo gnofo ngofo ongfo nogfo gofno ogfno gfono fgono ofgno fogno gnfoo ngfoo gfnoo fgnoo nfgoo fngoo onfgo nofgo ofngo fongo nfogo fnogo goofn ogofn goofn ogofn oogfn oogfn gofon ogfon gfoon fgoon ofgon fogon gofon ogfon gfoon fgoon ofgon fogon oofgn oofgn ofogn foogn ofogn foogn gnofo ngofo gonfo ognfo nogfo ongfo gnfoo ngfoo gfnoo fgnoo nfgoo fngoo gofno ogfno gfono fgono ofgno fogno nofgo onfgo nfogo fnogo ofngo fongo onofg noofg oonfg oonfg noofg onofg onfog nofog ofnog fonog nfoog fnoog oofng oofng ofong foong ofong foong nofog onfog nfoog fnoog ofnog fonog
Note: these 'words' (valid or invalid) are all the permutations of the word gonof. These words are obtained by scrambling the letters in gonof.