mhscu hmscu mshcu smhcu hsmcu shmcu mhcsu hmcsu mchsu cmhsu hcmsu chmsu mschu smchu mcshu cmshu scmhu csmhu hscmu shcmu hcsmu chsmu schmu cshmu mhsuc hmsuc mshuc smhuc hsmuc shmuc mhusc hmusc muhsc umhsc humsc uhmsc msuhc smuhc mushc umshc sumhc usmhc hsumc shumc husmc uhsmc suhmc ushmc mhcus hmcus mchus cmhus hcmus chmus mhucs hmucs muhcs umhcs humcs uhmcs mcuhs cmuhs muchs umchs cumhs ucmhs hcums chums hucms uhcms cuhms uchms mscuh smcuh mcsuh cmsuh scmuh csmuh msuch smuch musch umsch sumch usmch mcush cmush mucsh umcsh cumsh ucmsh scumh csumh sucmh uscmh cusmh ucsmh hscum shcum hcsum chsum schum cshum hsucm shucm huscm uhscm suhcm ushcm hcusm chusm hucsm uhcsm cuhsm uchsm scuhm csuhm suchm uschm cushm ucshm
Note: these 'words' (valid or invalid) are all the permutations of the word mhscu. These words are obtained by scrambling the letters in mhscu.