freer rfeer ferer efrer refer erfer freer rfeer ferer efrer refer erfer feerr eferr feerr eferr eefrr eefrr reefr erefr reefr erefr eerfr eerfr frere rfere ferre efrre refre erfre frree rfree frree rfree rrfee rrfee ferre efrre frere rfere erfre refre rerfe errfe rrefe rrefe errfe rerfe frere rfere ferre efrre refre erfre frree rfree frree rfree rrfee rrfee ferre efrre frere rfere erfre refre rerfe errfe rrefe rrefe errfe rerfe feerr eferr feerr eferr eefrr eefrr ferer efrer freer rfeer erfer refer ferer efrer freer rfeer erfer refer eerfr eerfr erefr reefr erefr reefr reerf ererf reerf ererf eerrf eerrf reref erref rreef rreef erref reref reref erref rreef rreef erref reref eerrf eerrf ererf reerf ererf reerf
Note: these 'words' (valid or invalid) are all the permutations of the word freer. These words are obtained by scrambling the letters in freer.