C11111333133313232233133313331333132313331333133313311221323132311   >>    C1111133313331323223313331333133313231333133313331331122132313231   <<    C11111333133313232233133313331333132313331333133313311221323132313   >>      C11111333133313232233133313331333132313331333133313311221323132312   >>