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