shale hsale sahle ashle hasle ahsle shlae hslae slhae lshae hlsae lhsae salhe aslhe slahe lsahe alshe lashe halse ahlse hlase lhase alhse lahse shael hsael sahel ashel hasel ahsel sheal hseal sehal eshal hesal ehsal saehl asehl seahl esahl aeshl eashl haesl ahesl heasl ehasl aehsl eahsl shlea hslea slhea lshea hlsea lhsea shela hsela sehla eshla hesla ehsla sleha lseha selha eslha lesha elsha hlesa lhesa helsa ehlsa lehsa elhsa saleh asleh slaeh lsaeh alseh laseh saelh aselh sealh esalh aeslh easlh sleah lseah selah eslah lesah elsah alesh laesh aelsh ealsh leash elash hales ahles hlaes lhaes alhes lahes haels ahels heals ehals aehls eahls hleas lheas helas ehlas lehas elhas alehs laehs aelhs ealhs leahs elahs
Note: these 'words' (valid or invalid) are all the permutations of the word shale. These words are obtained by scrambling the letters in shale.