C111123313331323113313331333133313331323133113313231333131323132313232321   >>    C11112331333132311331333133313331333132313311331323133313132313231323232   <<    C111123313331323113313331333133313331323133113313231333131323132313232323   >>      C111123313331323113313331333133313331323133113313231333131323132313232322   >>