C1111233133313231133133313231333133313113313113313331333223313123221333121   >>    C111123313331323113313331323133313331311331311331333133322331312322133312   <<    C1111233133313231133133313231333133313113313113313331333223313123221333123   >>      C1111233133313231133133313231333133313113313113313331333223313123221333122   >>