graft rgaft garft agrft ragft argft grfat rgfat gfrat fgrat rfgat frgat gafrt agfrt gfart fgart afgrt fagrt rafgt arfgt rfagt fragt afrgt fargt gratf rgatf gartf agrtf ragtf argtf grtaf rgtaf gtraf tgraf rtgaf trgaf gatrf agtrf gtarf tgarf atgrf tagrf ratgf artgf rtagf tragf atrgf targf grfta rgfta gfrta fgrta rfgta frgta grtfa rgtfa gtrfa tgrfa rtgfa trgfa gftra fgtra gtfra tgfra ftgra tfgra rftga frtga rtfga trfga ftrga tfrga gaftr agftr gfatr fgatr afgtr fagtr gatfr agtfr gtafr tgafr atgfr tagfr gftar fgtar gtfar tgfar ftgar tfgar aftgr fatgr atfgr tafgr ftagr tfagr raftg arftg rfatg fratg afrtg fartg ratfg artfg rtafg trafg atrfg tarfg rftag frtag rtfag trfag ftrag tfrag aftrg fatrg atfrg tafrg ftarg tfarg
Note: these 'words' (valid or invalid) are all the permutations of the word graft. These words are obtained by scrambling the letters in graft.