shuln hsuln suhln ushln husln uhsln shlun hslun slhun lshun hlsun lhsun sulhn uslhn sluhn lsuhn ulshn lushn hulsn uhlsn hlusn lhusn ulhsn luhsn shunl hsunl suhnl ushnl husnl uhsnl shnul hsnul snhul nshul hnsul nhsul sunhl usnhl snuhl nsuhl unshl nushl hunsl uhnsl hnusl nhusl unhsl nuhsl shlnu hslnu slhnu lshnu hlsnu lhsnu shnlu hsnlu snhlu nshlu hnslu nhslu slnhu lsnhu snlhu nslhu lnshu nlshu hlnsu lhnsu hnlsu nhlsu lnhsu nlhsu sulnh uslnh slunh lsunh ulsnh lusnh sunlh usnlh snulh nsulh unslh nuslh slnuh lsnuh snluh nsluh lnsuh nlsuh ulnsh lunsh unlsh nulsh lnush nlush hulns uhlns hluns lhuns ulhns luhns hunls uhnls hnuls nhuls unhls nuhls hlnus lhnus hnlus nhlus lnhus nlhus ulnhs lunhs unlhs nulhs lnuhs nluhs
Note: these 'words' (valid or invalid) are all the permutations of the word shuln. These words are obtained by scrambling the letters in shuln.