C111123313331323113313331333133313331323133112213331323133313113332111   >>    C11112331333132311331333133313331333132313311221333132313331311333211   <<    C111123313331323113313331333133313331323133112213331323133313113332113   >>      C111123313331323113313331333133313331323133112213331323133313113332112   >>