shirk hsirk sihrk ishrk hisrk ihsrk shrik hsrik srhik rshik hrsik rhsik sirhk isrhk srihk rsihk irshk rishk hirsk ihrsk hrisk rhisk irhsk rihsk shikr hsikr sihkr ishkr hiskr ihskr shkir hskir skhir kshir hksir khsir sikhr iskhr skihr ksihr ikshr kishr hiksr ihksr hkisr khisr ikhsr kihsr shrki hsrki srhki rshki hrski rhski shkri hskri skhri kshri hksri khsri srkhi rskhi skrhi ksrhi rkshi krshi hrksi rhksi hkrsi khrsi rkhsi krhsi sirkh isrkh srikh rsikh irskh riskh sikrh iskrh skirh ksirh iksrh kisrh srkih rskih skrih ksrih rksih krsih irksh riksh ikrsh kirsh rkish krish hirks ihrks hriks rhiks irhks rihks hikrs ihkrs hkirs khirs ikhrs kihrs hrkis rhkis hkris khris rkhis krhis irkhs rikhs ikrhs kirhs rkihs krihs
Note: these 'words' (valid or invalid) are all the permutations of the word shirk. These words are obtained by scrambling the letters in shirk.