issgm sisgm issgm sisgm ssigm ssigm isgsm sigsm igssm gissm sgism gsism isgsm sigsm igssm gissm sgism gsism ssgim ssgim sgsim gssim sgsim gssim issmg sismg issmg sismg ssimg ssimg ismsg simsg imssg missg smisg msisg ismsg simsg imssg missg smisg msisg ssmig ssmig smsig mssig smsig mssig isgms sigms igsms gisms sgims gsims ismgs simgs imsgs misgs smigs msigs igmss gimss imgss migss gmiss mgiss sgmis gsmis smgis msgis gmsis mgsis isgms sigms igsms gisms sgims gsims ismgs simgs imsgs misgs smigs msigs igmss gimss imgss migss gmiss mgiss sgmis gsmis smgis msgis gmsis mgsis ssgmi ssgmi sgsmi gssmi sgsmi gssmi ssmgi ssmgi smsgi mssgi smsgi mssgi sgmsi gsmsi smgsi msgsi gmssi mgssi sgmsi gsmsi smgsi msgsi gmssi mgssi
Note: these 'words' (valid or invalid) are all the permutations of the word issgm. These words are obtained by scrambling the letters in issgm.