seils esils siels isels eisls iesls selis eslis sleis lseis elsis lesis siles isles slies lsies ilses lises eilss ielss eliss leiss iless liess seisl esisl siesl isesl eissl iessl sesil essil sseil sseil essil sesil sisel issel ssiel ssiel issel sisel eissl iessl esisl seisl isesl siesl selsi eslsi slesi lsesi elssi lessi sesli essli sseli sseli essli sesli slsei lssei sslei sslei lssei slsei elssi lessi eslsi selsi lsesi slesi silse islse slise lsise ilsse lisse sisle issle ssile ssile issle sisle slsie lssie sslie sslie lssie slsie ilsse lisse islse silse lsise slise eilss ielss eliss leiss iless liess eisls iesls esils seils isels siels elsis lesis eslis selis lseis sleis ilses lises isles siles lsies slies
Note: these 'words' (valid or invalid) are all the permutations of the word seils. These words are obtained by scrambling the letters in seils.