C111123313331323113313331313331333132313311211113313231333131212231   >>    C11112331333132311331333131333133313231331121111331323133313121223   <<    C111123313331323113313331313331333132313311211113313231333131212233   >>      C111123313331323113313331313331333132313311211113313231333131212232   >>