scuds csuds sucds uscds cusds ucsds scdus csdus sdcus dscus cdsus dcsus sudcs usdcs sducs dsucs udscs duscs cudss ucdss cduss dcuss udcss ducss scusd csusd sucsd uscsd cussd ucssd scsud cssud sscud sscud cssud scsud suscd usscd ssucd ssucd usscd suscd cussd ucssd csusd scusd uscsd sucsd scdsu csdsu sdcsu dscsu cdssu dcssu scsdu cssdu sscdu sscdu cssdu scsdu sdscu dsscu ssdcu ssdcu dsscu sdscu cdssu dcssu csdsu scdsu dscsu sdcsu sudsc usdsc sdusc dsusc udssc dussc susdc ussdc ssudc ssudc ussdc susdc sdsuc dssuc ssduc ssduc dssuc sdsuc udssc dussc usdsc sudsc dsusc sdusc cudss ucdss cduss dcuss udcss ducss cusds ucsds csuds scuds uscds sucds cdsus dcsus csdus scdus dscus sdcus udscs duscs usdcs sudcs dsucs sducs
Note: these 'words' (valid or invalid) are all the permutations of the word scuds. These words are obtained by scrambling the letters in scuds.