uscid sucid ucsid cusid scuid csuid usicd suicd uiscd iuscd siucd isucd ucisd cuisd uicsd iucsd ciusd icusd sciud csiud sicud iscud cisud icsud uscdi sucdi ucsdi cusdi scudi csudi usdci sudci udsci dusci sduci dsuci ucdsi cudsi udcsi ducsi cdusi dcusi scdui csdui sdcui dscui cdsui dcsui usidc suidc uisdc iusdc siudc isudc usdic sudic udsic dusic sduic dsuic uidsc iudsc udisc duisc idusc diusc siduc isduc sdiuc dsiuc idsuc disuc ucids cuids uicds iucds ciuds icuds ucdis cudis udcis ducis cduis dcuis uidcs iudcs udics duics iducs diucs cidus icdus cdius dcius idcus dicus scidu csidu sicdu iscdu cisdu icsdu scdiu csdiu sdciu dsciu cdsiu dcsiu sidcu isdcu sdicu dsicu idscu discu cidsu icdsu cdisu dcisu idcsu dicsu
Note: these 'words' (valid or invalid) are all the permutations of the word uscid. These words are obtained by scrambling the letters in uscid.