laths alths ltahs tlahs atlhs talhs lahts alhts lhats hlats ahlts halts lthas tlhas lhtas hltas thlas htlas athls tahls ahtls hatls thals htals latsh altsh ltash tlash atlsh talsh lasth alsth lsath slath aslth salth ltsah tlsah lstah sltah tslah stlah atslh taslh astlh satlh tsalh stalh lahst alhst lhast hlast ahlst halst lasht alsht lsaht slaht aslht salht lhsat hlsat lshat slhat hslat shlat ahslt haslt ashlt sahlt hsalt shalt lthsa tlhsa lhtsa hltsa thlsa htlsa ltsha tlsha lstha sltha tslha stlha lhsta hlsta lshta slhta hslta shlta thsla htsla tshla sthla hstla shtla athsl tahsl ahtsl hatsl thasl htasl atshl tashl asthl sathl tsahl stahl ahstl hastl ashtl sahtl hsatl shatl thsal htsal tshal sthal hstal shtal
Note: these 'words' (valid or invalid) are all the permutations of the word laths. These words are obtained by scrambling the letters in laths.