giber igber gbier bgier ibger biger giebr igebr geibr egibr iegbr eigbr gbeir bgeir gebir egbir begir ebgir ibegr biegr iebgr eibgr beigr ebigr gibre igbre gbire bgire ibgre bigre girbe igrbe gribe rgibe irgbe rigbe gbrie bgrie grbie rgbie brgie rbgie ibrge birge irbge ribge brige rbige gierb igerb geirb egirb iegrb eigrb gireb igreb grieb rgieb irgeb rigeb gerib egrib greib rgeib ergib regib iergb eirgb iregb riegb erigb reigb gberi bgeri gebri egbri begri ebgri gbrei bgrei grbei rgbei brgei rbgei gerbi egrbi grebi rgebi ergbi regbi bergi ebrgi bregi rbegi erbgi rebgi iberg bierg iebrg eibrg beirg ebirg ibreg bireg irbeg ribeg brieg rbieg ierbg eirbg irebg riebg eribg reibg berig ebrig breig rbeig erbig rebig
Note: these 'words' (valid or invalid) are all the permutations of the word giber. These words are obtained by scrambling the letters in giber.