butic ubtic btuic tbuic utbic tubic buitc ubitc biutc ibutc uibtc iubtc btiuc tbiuc bituc ibtuc tibuc itbuc utibc tuibc uitbc iutbc tiubc itubc butci ubtci btuci tbuci utbci tubci bucti ubcti bcuti cbuti ucbti cubti btcui tbcui bctui cbtui tcbui ctbui utcbi tucbi uctbi cutbi tcubi ctubi buict ubict biuct ibuct uibct iubct bucit ubcit bcuit cbuit ucbit cubit bicut ibcut bciut cbiut icbut cibut uicbt iucbt ucibt cuibt icubt ciubt bticu tbicu bitcu ibtcu tibcu itbcu btciu tbciu bctiu cbtiu tcbiu ctbiu bictu ibctu bcitu cbitu icbtu cibtu ticbu itcbu tcibu ctibu ictbu citbu uticb tuicb uitcb iutcb tiucb itucb utcib tucib uctib cutib tcuib ctuib uictb iuctb ucitb cuitb icutb ciutb ticub itcub tciub ctiub ictub citub
Note: these 'words' (valid or invalid) are all the permutations of the word butic. These words are obtained by scrambling the letters in butic.