lahrn alhrn lharn hlarn ahlrn halrn larhn alrhn lrahn rlahn arlhn ralhn lhran hlran lrhan rlhan hrlan rhlan ahrln harln arhln rahln hraln rhaln lahnr alhnr lhanr hlanr ahlnr halnr lanhr alnhr lnahr nlahr anlhr nalhr lhnar hlnar lnhar nlhar hnlar nhlar ahnlr hanlr anhlr nahlr hnalr nhalr larnh alrnh lranh rlanh arlnh ralnh lanrh alnrh lnarh nlarh anlrh nalrh lrnah rlnah lnrah nlrah rnlah nrlah arnlh ranlh anrlh narlh rnalh nralh lhrna hlrna lrhna rlhna hrlna rhlna lhnra hlnra lnhra nlhra hnlra nhlra lrnha rlnha lnrha nlrha rnlha nrlha hrnla rhnla hnrla nhrla rnhla nrhla ahrnl harnl arhnl rahnl hranl rhanl ahnrl hanrl anhrl nahrl hnarl nharl arnhl ranhl anrhl narhl rnahl nrahl hrnal rhnal hnral nhral rnhal nrhal
Note: these 'words' (valid or invalid) are all the permutations of the word lahrn. These words are obtained by scrambling the letters in lahrn.