C11111333133313232233133313331333133313231333133313113313332232111133133312321   >>    C1111133313331323223313331333133313331323133313331311331333223211113313331232   <<    C11111333133313232233133313331333133313231333133313113313332232111133133312323   >>      C11111333133313232233133313331333133313231333133313113313332232111133133312322   >>