C11111333133313232233133313331333133313231312111133131121211113313331323231311   >>    C1111133313331323223313331333133313331323131211113313112121111331333132323131   <<    C11111333133313232233133313331333133313231312111133131121211113313331323231313   >>      C11111333133313232233133313331333133313231312111133131121211113313331323231312   >>