$ grep -P "^[ABCDEFabcdefOoIi]{6,6}$" /usr/share/dict/words | tr 'OoIi' '0011' | tr '[:lower:]' '[:upper:]' | awk '{print "#" $0}' #ACAD1A #B0BB1E #DEBB1E #AB1DED #ACAC1A #ACCEDE #AC1D1C #BAB1ED #BA0BAB #BEADED #BEDDED #BEEFED #B0BBED #B0D1CE #B00BED #CABBED #CABB1E #CADD1E #C1CADA #C0DDED #C0FFEE #C01FED #DABBED #DECADE #DEC1DE #DEC0DE #DEEDED #DEFACE #DEF1ED #DE1CED #D0FFED #D00DAD #EDD1ED #EFFACE #FACADE #F1BBED #F0BBED #0FF1CE