doucs oducs duocs udocs oudcs uodcs docus odcus dcous cdous ocdus codus ducos udcos dcuos cduos ucdos cudos oucds uocds ocuds couds ucods cuods dousc odusc duosc udosc oudsc uodsc dosuc odsuc dsouc sdouc osduc soduc dusoc udsoc dsuoc sduoc usdoc sudoc ousdc uosdc osudc soudc usodc suodc docsu odcsu dcosu cdosu ocdsu codsu doscu odscu dsocu sdocu osdcu sodcu dcsou cdsou dscou sdcou csdou scdou ocsdu cosdu oscdu socdu csodu scodu ducso udcso dcuso cduso ucdso cudso dusco udsco dsuco sduco usdco sudco dcsuo cdsuo dscuo sdcuo csduo scduo ucsdo cusdo uscdo sucdo csudo scudo oucsd uocsd ocusd cousd ucosd cuosd ouscd uoscd osucd soucd usocd suocd ocsud cosud oscud socud csoud scoud ucsod cusod uscod sucod csuod scuod
Note: these 'words' (valid or invalid) are all the permutations of the word doucs. These words are obtained by scrambling the letters in doucs.