C11111333133313232233133313331333133313231312331323133313113311232311   >>    C1111133313331323223313331333133313331323131233132313331311331123231   <<    C11111333133313232233133313331333133313231312331323133313113311232313   >>      C11111333133313232233133313331333133313231312331323133313113311232312   >>